2020 GMC Sierra 3500 HD Radiator Repair & Service

Get Started

Service Your GMC Sierra 3500 HD Radiator

Keeping your cool is easier when your engine is cool. Schedule your 2020 GMC Sierra 3500 HD radiator repair or service today.

Schedule an Appointment

When to Service Your 2020 GMC Sierra 3500 HD Cooling System

It can be tough to know when to have your GMC Sierra 3500 HD radiator serviced if you don't know what it does, but you need to know the signs of radiator malfunction. Your radiator is part of the cooling system. It helps regulate engine temperature. So, what happens when the radiator isn’t working quite like it should? You guessed it – your engine overheats, and it may even break down completely.

Regular, proactive service on the radiator in your 2020 GMC Sierra 3500 HD is essential for long-term engine health. In fact, GMC recommends replacing coolant/antifreeze at specific intervals, but it’s a good idea to keep your eyes open for any indication that your radiator is failing. Your radiator could be close to causing an engine breakdown if you see coolant leaks under your car, high engine temperatures, or a dashboard light that indicates low coolant. When you experience one or more of these issues, head to your local Firestone Complete Auto Care for a Courtesy Check.

GMC Sierra 3500 HD Coolant Fluid Exchange

What happens during a radiator repair service? When you come to Firestone Complete Auto Care, we’ll begin your radiator repair with an in-depth inspection of the cooling system in your GMC Sierra 3500 HD. We then do a machine-powered radiator exchange, replenish flushed chemicals, sealants, and lubricants, and then pressure check for leaks.

Radiator problems often go hand in hand with water pump problems. Some services for your 2020 GMC Sierra 3500 HD engine can wait, but the water pump is one part that needs to be addressed ASAP once an issue is identified. This vital part keeps coolant moving through the engine, hoses, and radiator. If it isn’t functioning properly, your engine won’t be able to stay within its optimal temperature range. Let our technicians examine your radiator pumps and hoses to help you stay ahead of any potential engine problems. When it comes to radiator service and repair, we’ll take excellent care of your 2020 GMC Sierra 3500 HD at Firestone Complete Auto Care. After all, we know it’s not just a car. It’s your car.

Common GMC Sierra 3500 HD Radiator Questions

With regular maintenance and service as needed, you could extend the life of your 2020 GMC Sierra 3500 HD radiator. Get answers to common radiator questions, and head to your nearest Firestone Complete Auto Care as soon as you suspect a radiator issue.

  • What does the coolant light on my GMC dashboard mean? If the coolant light illuminates on your dashboard, your engine could be overheating. Pull over to a safe area and wait for the engine to cool down. Then, head to your nearest Firestone Complete Auto Care for a coolant system check.
  • Can an antifreeze leak wait? Don’t ignore puddles on your driveway or garage floor. If you see a green, bright orange, or pink fluid puddling under your car (it might be sticky, too), it could be antifreeze that’s leaking out of the engine. Antifreeze has a sweet, attractive smell to cats and dogs (and it’s highly toxic to them), so look out for your pets! Repair any leaks as soon as possible, then carefully wash away any remaining fluid that’s left behind on the driveway or garage floor.
  • When should my GMC Sierra 3500 HD radiator be cleaned? To keep your GMC Sierra 3500 HD radiator running well, it’s wise to get it cleaned out a few times a year.
  • What can cause my Sierra 3500 HD to overheat? Your GMC Sierra 3500 HD engine could overheat due to low coolant, a clogged radiator, a damaged water pump, a malfunctioning cooling fan, or a faulty thermostat.
  • What is making my Sierra 3500 HD radiator sound like it’s boiling or rumbling? Air pockets in your Sierra 3500 HD’s cooling system may cause a rumbling or boiling noise. You could also have a clogged radiator or simply need to replace the radiator cap.
  • Is rust in my Sierra 3500 HD radiator bad? Yes. Having rust in your GMC Sierra 3500 HD radiator can cause leaks, a reduction in cooling efficiency, and even radiator failure. If rust is left untreated, it can corrode the radiator's cooling passages, causing small cracks or holes that can significantly impact the radiator's ability to function. To help prevent rust from becoming a major issue, it's important to properly maintain your radiator system.