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

It's okay if your check engine light comes on when you first start your vehicle. It’s just your Sierra 3500 HD firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are GMC Sierra 3500 HD engine noises bad?

Strange engine sounds can be a sign something’s off in your GMC Sierra 3500 HD. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

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

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my GMC Sierra 3500 HD 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.

What could cause my Sierra 3500 HD engine to suddenly stop?

Your Sierra 3500 HD car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Where can I go for GMC Sierra 3500 HD repair?

Your local Firestone Complete Auto Care has you covered with expert Sierra 3500 HD engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2014 GMC Sierra 3500 HD Engine Repair

Learn about

2014 GMC Sierra 3500 HD Trim Options

Select your GMC Sierra 3500 HD trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V8/6.0L

V8/6.6L

GMC Sierra 3500 HD Repairs and Services

Stuff wears out. Even your GMC Sierra 3500 HD’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 2014 GMC Sierra 3500 HD repairs.

We Know GMC Sierra 3500 HD Engines

GMC Sierra 3500 HD engines are known for their reliability. You may have even been thinking about that when you bought it. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. When they do, you might find yourself searching for 2014 GMC Sierra 3500 HD engine repair or replacement parts. That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC Sierra 3500 HD engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 2014 GMC Sierra 3500 HD

As soon as your Sierra 3500 HD check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your vehicle's ignition, Possible causes can include a failing oxygen sensor, bad spark plug, issues with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your Sierra 3500 HD in for an on-board diagnostic check and we’ll figure out why that check engine light is giving you grief. rattling sounds, essential fluid leaks, or misfiring.

Engine Repairs for Your 2014 Sierra 3500 HD

If your 2014 Sierra 3500 HD engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair isn’t urgent right now, 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. Choose Firestone Complete Auto Care for GMC Sierra 3500 HD engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the cambelt, motor oil seal, fuses, or another part.

2014 GMC Sierra 3500 HD Engine Q&A

Why does the check engine light in my Sierra 3500 HD turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. It’s just your Sierra 3500 HD firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are GMC Sierra 3500 HD engine noises bad? Strange engine sounds can be a sign something’s off in your GMC Sierra 3500 HD. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 3500 HD engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my GMC Sierra 3500 HD 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.
What could cause my Sierra 3500 HD engine to suddenly stop? Your Sierra 3500 HD car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Where can I go for GMC Sierra 3500 HD repair? Your local Firestone Complete Auto Care has you covered with expert Sierra 3500 HD engine repair. Schedule an appointment today and see us at one of our thousands of locations.