2020 GMC Sierra 2500 HD Maintenance
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2020 GMC Sierra 2500 HD Maintenance Schedule
What is the manufacturer recommended maintenance schedule for a 2020 GMC Sierra 2500 HD? Find maintenance info for your vehicle.
7,500 Miles
Maintenance check at 7500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Air Cleaner Element
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
15,000 Miles
Maintenance check at 15000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
22,500 Miles
Maintenance check at 22500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
30,000 Miles
Maintenance check at 30000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
37,500 Miles
Maintenance check at 37500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
45,000 Miles
Maintenance check at 45000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
52,500 Miles
Maintenance check at 52500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Starter Safety Switch
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
60,000 Miles
Maintenance check at 60000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
67,500 Miles
Maintenance check at 67500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
75,000 Miles
Maintenance check at 75000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Parking Brake
- LUBRICATE Body Components
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
82,500 Miles
Maintenance check at 82500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
90,000 Miles
Maintenance check at 90000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
97,500 Miles
Maintenance check at 97500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Spark Plug Wires
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Spark Plugs
- RESET Oil Life Monitor
- ROTATE Tires
105,000 Miles
Maintenance check at 105000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
112,500 Miles
Maintenance check at 112500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
120,000 Miles
Maintenance check at 120000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
127,500 Miles
Maintenance check at 127500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Sunroof Rails
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
135,000 Miles
Maintenance check at 135000 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
142,500 Miles
Maintenance check at 142500 miles for your 2020 GMC Sierra 2500 HD Base
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
150,000 Miles
Maintenance check at 150000 miles for your 2020 GMC Sierra 2500 HD Base
- DRAIN & REFILL Engine Coolant
- INSPECT Accelerator Pedal
- INSPECT Accessory Drive Belt
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Automatic Transmission Filter
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
7,500 Miles
Maintenance check at 7500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Accelerator Pedal
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
15,000 Miles
Maintenance check at 15000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
22,500 Miles
Maintenance check at 22500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- ROTATE Tires
- RESET Oil Life Monitor
30,000 Miles
Maintenance check at 30000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
37,500 Miles
Maintenance check at 37500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
45,000 Miles
Maintenance check at 45000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
52,500 Miles
Maintenance check at 52500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Ignition Transaxle Lock
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
60,000 Miles
Maintenance check at 60000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
67,500 Miles
Maintenance check at 67500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
75,000 Miles
Maintenance check at 75000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
82,500 Miles
Maintenance check at 82500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Air Cleaner Element
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
90,000 Miles
Maintenance check at 90000 miles for your 2020 GMC Sierra 2500 HD SLE
- RESET Oil Life Monitor
- ROTATE Tires
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
97,500 Miles
Maintenance check at 97500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Spark Plug Wires
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Spark Plugs
- RESET Oil Life Monitor
- ROTATE Tires
105,000 Miles
Maintenance check at 105000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
112,500 Miles
Maintenance check at 112500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
120,000 Miles
Maintenance check at 120000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
127,500 Miles
Maintenance check at 127500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Leakage
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
135,000 Miles
Maintenance check at 135000 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
142,500 Miles
Maintenance check at 142500 miles for your 2020 GMC Sierra 2500 HD SLE
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
150,000 Miles
Maintenance check at 150000 miles for your 2020 GMC Sierra 2500 HD SLE
- DRAIN & REFILL Engine Coolant
- INSPECT Accelerator Pedal
- INSPECT Accessory Drive Belt
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Hood Support Gas Strut
- REPLACE Automatic Transmission Filter
- RESET Oil Life Monitor
- ROTATE Tires
7,500 Miles
Maintenance check at 7500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
15,000 Miles
Maintenance check at 15000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
22,500 Miles
Maintenance check at 22500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
- LUBRICATE Body Components
30,000 Miles
Maintenance check at 30000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
37,500 Miles
Maintenance check at 37500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
45,000 Miles
Maintenance check at 45000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
52,500 Miles
Maintenance check at 52500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Engine Oil & Filter
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
60,000 Miles
Maintenance check at 60000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
67,500 Miles
Maintenance check at 67500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
75,000 Miles
Maintenance check at 75000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
- REPLACE Hood Support Gas Strut
82,500 Miles
Maintenance check at 82500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
90,000 Miles
Maintenance check at 90000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
97,500 Miles
Maintenance check at 97500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Spark Plug Wires
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Starter Safety Switch
- LUBRICATE Body Components
- REPLACE Spark Plugs
- RESET Oil Life Monitor
- ROTATE Tires
105,000 Miles
Maintenance check at 105000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
112,500 Miles
Maintenance check at 112500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
120,000 Miles
Maintenance check at 120000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
127,500 Miles
Maintenance check at 127500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Exhaust System & Heat Shields
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
135,000 Miles
Maintenance check at 135000 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
142,500 Miles
Maintenance check at 142500 miles for your 2020 GMC Sierra 2500 HD SLT
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
150,000 Miles
Maintenance check at 150000 miles for your 2020 GMC Sierra 2500 HD SLT
- DRAIN & REFILL Engine Coolant
- INSPECT Accessory Drive Belt
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Accelerator Pedal
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Automatic Transmission Filter
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
7,500 Miles
Maintenance check at 7500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
15,000 Miles
Maintenance check at 15000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
22,500 Miles
Maintenance check at 22500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Wiper Blades
- INSPECT Window Washer Fluid Level
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
30,000 Miles
Maintenance check at 30000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
37,500 Miles
Maintenance check at 37500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
45,000 Miles
Maintenance check at 45000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- RESET Oil Life Monitor
- ROTATE Tires
52,500 Miles
Maintenance check at 52500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Brake System
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
60,000 Miles
Maintenance check at 60000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
67,500 Miles
Maintenance check at 67500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
75,000 Miles
Maintenance check at 75000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
82,500 Miles
Maintenance check at 82500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
90,000 Miles
Maintenance check at 90000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
97,500 Miles
Maintenance check at 97500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Spark Plug Wires
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Restraint System Components
- LUBRICATE Body Components
- REPLACE Spark Plugs
- RESET Oil Life Monitor
- ROTATE Tires
105,000 Miles
Maintenance check at 105000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
112,500 Miles
Maintenance check at 112500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
120,000 Miles
Maintenance check at 120000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
127,500 Miles
Maintenance check at 127500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Engine Coolant
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
135,000 Miles
Maintenance check at 135000 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
142,500 Miles
Maintenance check at 142500 miles for your 2020 GMC Sierra 2500 HD Denali
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
150,000 Miles
Maintenance check at 150000 miles for your 2020 GMC Sierra 2500 HD Denali
- DRAIN & REFILL Engine Coolant
- INSPECT Accelerator Pedal
- INSPECT Accessory Drive Belt
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Automatic Transmission Filter
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
7,500 Miles
Maintenance check at 7500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
15,000 Miles
Maintenance check at 15000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
22,500 Miles
Maintenance check at 22500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- INSPECT Restraint System Components
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
30,000 Miles
Maintenance check at 30000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
37,500 Miles
Maintenance check at 37500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
45,000 Miles
Maintenance check at 45000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
52,500 Miles
Maintenance check at 52500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
60,000 Miles
Maintenance check at 60000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
67,500 Miles
Maintenance check at 67500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
75,000 Miles
Maintenance check at 75000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
82,500 Miles
Maintenance check at 82500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
90,000 Miles
Maintenance check at 90000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
97,500 Miles
Maintenance check at 97500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Spark Plug Wires
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Gas Strut
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Spark Plugs
- RESET Oil Life Monitor
- ROTATE Tires
105,000 Miles
Maintenance check at 105000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
112,500 Miles
Maintenance check at 112500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
120,000 Miles
Maintenance check at 120000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
127,500 Miles
Maintenance check at 127500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Accelerator Pedal
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
135,000 Miles
Maintenance check at 135000 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Evap Emission Control System
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Air Cleaner/Element
- REPLACE Automatic Transmission Filter
- REPLACE Automatic Transmission Fluid
- REPLACE Cabin Air Filter
- REPLACE Fuel Filter
- REPLACE Transfer Case Fluid
- RESET Oil Life Monitor
- ROTATE Tires
142,500 Miles
Maintenance check at 142500 miles for your 2020 GMC Sierra 2500 HD AT4
- INSPECT Accelerator Pedal
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Wiper Blades
- INSPECT Window Washer Fluid Level
- LUBRICATE Body Components
- RESET Oil Life Monitor
- ROTATE Tires
150,000 Miles
Maintenance check at 150000 miles for your 2020 GMC Sierra 2500 HD AT4
- DRAIN & REFILL Engine Coolant
- INSPECT Accelerator Pedal
- INSPECT Accessory Drive Belt
- INSPECT Air Cleaner Element
- INSPECT Automatic Shiftlock And Park/Neutral Switch
- INSPECT Brake System
- INSPECT Engine Coolant
- INSPECT Engine Oil & Filter
- INSPECT Exhaust System & Heat Shields
- INSPECT Fuel System
- INSPECT Gas Strut
- INSPECT Ignition Transaxle Lock
- INSPECT Leakage
- INSPECT Parking Brake
- INSPECT Restraint System Components
- INSPECT Starter Safety Switch
- INSPECT Sunroof Rails
- INSPECT Suspension & Steering Components
- INSPECT Window Washer Fluid Level
- INSPECT Wiper Blades
- LUBRICATE Body Components
- REPLACE Automatic Transmission Filter
- REPLACE Hood Support Gas Strut
- RESET Oil Life Monitor
- ROTATE Tires
Maintenance for Your 2020 GMC Sierra 2500 HD
How often should I service my 2020 GMC Sierra 2500 HD?
Here’s Why 2020 GMC Sierra 2500 HD Scheduled Maintenance Matters
When it comes to your GMC Sierra 2500 HD, how you treat your car makes all the difference in its performance. With proactive maintenance, your Sierra 2500 HD could be on the road well past the 200,000 mile mark. Not an expert in what services your car needs and when? No problem. It can be overwhelming, but fortunately, there’s a resource that takes the guesswork out of routine Sierra 2500 HD maintenance. Just follow your 2020 GMC Sierra 2500 HD maintenance schedule!
The recommended maintenance schedule is put together by GMC, your vehicle manufacturer. Depending on driving conditions and climate in your area (as well as other contributing factors, like your personal travel habits), your car’s scheduled maintenance needs may vary; in most cases, though, recommended maintenance will consist of services like fluid exchanges, filter changes, new brake pads, oil changes, and tire rotations. Keeping up with routine service appointments is a great way to keep your Sierra 2500 HD running for longer, increase your vehicle safety, and prevent common 2020 GMC Sierra 2500 HD problems.
Essential Maintenance to Keep Your GMC Sierra 2500 HD Running Newer, Longer
Come to Firestone Complete Auto Care for manufacturer-recommended routine maintenance on your 2020 GMC Sierra 2500 HD and a skilled technician will start the appointment with a Courtesy Check. This Courtesy Check can establish a baseline of what may need to be addressed during your service appointment. Every Courtesy Check will include a visual inspection of your Sierra 2500 HD. We’ll check your head and tail lights, fluid levels, filters, tires (and their alignment!), and windshield wiper blades. We’ll also perform a free battery check to determine your battery’s charge level.
Could your 2020 GMC Sierra 2500 HD be ready for a new battery? Batteries generally need to be replaced every three to five years. Depending on the climate where you live and your habits while driving, your Sierra 2500 HD may need a replacement battery sooner. Taking short trips or exposing your car to extreme temperatures (like in the dead of winter or heat of summer) could reduce the life expectancy of your GMC Sierra 2500 HD battery. It can be tempting to try and get as much life out of your battery as possible, but it’s smart to check it regularly and replace it before it gets too weak. If you keep driving on a battery that can't hold a charge, you run the risk of being stranded when your battery finally gives out (and no one can predict where that might be!). Your GMC Sierra 2500 HD won't be going anywhere without a strong battery.
Staying on schedule for battery replacements and motor oil changes can support your engine’s overall performance and keep your 2020 GMC Sierra 2500 HD running newer, longer. To learn how often GMC recommends you have the oil changed in your 2020 Sierra 2500 HD, check out the information table at the beginning of this page. Don’t forget, though, that weather conditions in your area or your personal driving habits can affect this interval. Talk to a Firestone Complete Auto Care technician to know when to change your oil. Not sure what type of oil to use for your 2020 GMC Sierra 2500 HD? We can help with that, too!
Periodic service to the steering system in your GMC Sierra 2500 HD can not only ensure a smooth ride; it can also help you maintain control of your car in compromised road conditions. When it comes to steering and suspension, you want to catch small problems before they turn into big (and expensive) ones. Trust our technicians to inspect system components and if needed, provide GMC Sierra 2500 HD steering and suspension services including wheel alignment, strut replacement, power steering fluid changes, ball joint lubrication, and wheel bearing replacement. Prevent damage or premature wear and tear on your GMC Sierra 2500 HD's steering system with regular maintenance.
If you skip recommended GMC Sierra 2500 HD services, you (and your engine) could quickly lose your cool when there's a problem on the road–especially if that problem is an overheated engine or broken A/C. Our technicians have you covered there, too, with the tools and expertise to care for your entire GMC Sierra 2500 HD cooling, heating, and climate control system. Need a new GMC Sierra 2500 HD radiator? We can take care of that. A/C smelling musty? We’re on it. Firestone Complete Auto Care is the place to go for 2020 GMC Sierra 2500 HD maintenance.
Don’t wait until something goes wrong with your car. Visit your nearest location for proactive maintenance today.
Stay ahead of maintenance for your 2020 GMC Sierra 2500 HD. Get answers to everyday maintenance questions and take better care of your GMC today.
Take an active role in maintaining your 2020 GMC Sierra 2500 HD. Get answers to common GMC Sierra 2500 HD maintenance questions and learn more about caring for your vehicle.
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What should I do after hitting a pothole in my GMC Sierra 2500 HD? You know your GMC Sierra 2500 HD better than anyone else, so you’ll know if something doesn’t feel right while driving. Have your alignment checked (and adjusted if necessary) as soon as you notice a pulling steering wheel to prevent suspension damage or uneven tire wear.
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When should I switch my GMC Sierra 2500 HD to high mileage oil? Do you have more than 75,000 miles on your GMC Sierra 2500 HD? If so, request to switch to high mileage oil at your next oil change. This type of oil is specially formulated to keep aging engine parts in the best possible condition.
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Can I ignore dashboard lights on my GMC? Don't ignore dashboard warning lights! Bring your GMC Sierra 2500 HD in for a diagnostic code scan as soon as a dashboard warning light flashes on, whether it's your check engine or battery light. Dashboard lights alert you to trouble under the hood.