Why does the check engine light in my Sierra 3500 turn on when I start my car?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your Sierra 3500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my GMC engine sound different?

Strange engine sounds can be a sign something’s off in your GMC Sierra 3500. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 3500 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in my GMC Sierra 3500 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

Why did my Sierra 3500 engine suddenly stop?

If your Sierra 3500 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for GMC Sierra 3500 repair?

Your local Firestone Complete Auto Care offers GMC Sierra 3500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Reliable Repairs for 2002 GMC Sierra 3500 Engines

Learn about

2002 GMC Sierra 3500 Trim Options

Select your GMC Sierra 3500 trim level to learn more about GMC-recommended engine repair. Even GMC Sierra 3500 parts will get older and change.

V8/6.0L

V8/6.6L

V8/8.1L

GMC Sierra 3500 Repairs and Services

Stuff wears out. Even your GMC Sierra 3500’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 2002 GMC Sierra 3500 repairs.

We Care for GMC Sierra 3500 Engines

GMC Sierra 3500 drivers trust that their Sierra 3500 will take them near and far. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If they do, you’ll have to find a dependable 2002 GMC service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC Sierra 3500 engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 2002 GMC Sierra 3500 Check Engine Light Is On

If your Sierra 3500 check engine light is on, it’s time to get it looked at. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel injection, Causes may include a faulty oxygen sensor, bad spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your Sierra 3500 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. rattling sounds, burning smells, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2002 Sierra 3500

If your 2002 Sierra 3500 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 2002 Sierra 3500 engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — serpentine belt, engine oil seal, ignition coil, or another part.

Questions About 2002 GMC Sierra 3500 Engines

Why does the check engine light in my Sierra 3500 turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. It’s just your Sierra 3500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my GMC engine sound different? Strange engine sounds can be a sign something’s off in your GMC Sierra 3500. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 3500 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in my GMC Sierra 3500 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
Why did my Sierra 3500 engine suddenly stop? If your Sierra 3500 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for GMC Sierra 3500 repair? Your local Firestone Complete Auto Care offers GMC Sierra 3500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!