Why does the check engine light come on when I start my Sierra 1500?

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my GMC Sierra 1500 making engine noise?

Unusual noises can signal a problem with your GMC Sierra 1500 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by 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 1500 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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 use water in my GMC Sierra 1500 radiator?

While it’s not recommended, you can use water in your Sierra 1500 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

Why did my Sierra 1500 engine suddenly stop?

There are different reasons your Sierra 1500 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who can repair my GMC Sierra 1500 engine?

Your local Firestone Complete Auto Care offers GMC Sierra 1500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 2012 GMC Sierra 1500

Learn about

2012 GMC Sierra 1500 Trim Options

Select your GMC Sierra 1500 trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V6/4.3L

V8/4.8L

V8/5.3L

V8/6.0L

V8/6.2L

GMC Sierra 1500 Repairs and Services

Nothing lasts forever. Even your GMC Sierra 1500's many parts and pieces. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2012 GMC Sierra 1500 repairs.

We Care for GMC Sierra 1500 Engines

GMC Sierra 1500 drivers trust that their Sierra 1500 will take them near and far. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. If they do, you’ll have to find a dependable 2012 GMC service center — quick! That's when it's time to head to Firestone Complete Auto Care. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your GMC Sierra 1500 engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Check Engine Light on 2012 GMC Sierra 1500

An illuminated check engine light on your GMC Sierra 1500 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission system, and it won’t go away by ignoring it. Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your Sierra 1500 issues diagnosed and our expert techs will get the root of the problem. Other signs your GMC Sierra 1500 engine needs some TLC are burning smells, or misfiring.

Engine Repairs for Your 2012 Sierra 1500

If your 2012 GMC Sierra 1500 needs engine repair, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. 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 1500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the timing belt, engine oil seal, sensors, or a different component.

2012 GMC Sierra 1500 Engine Q&A

Why does the check engine light come on when I start my Sierra 1500? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my GMC Sierra 1500 making engine noise? Unusual noises can signal a problem with your GMC Sierra 1500 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by 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 1500 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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 use water in my GMC Sierra 1500 radiator? While it’s not recommended, you can use water in your Sierra 1500 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
Why did my Sierra 1500 engine suddenly stop? There are different reasons your Sierra 1500 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who can repair my GMC Sierra 1500 engine? Your local Firestone Complete Auto Care offers GMC Sierra 1500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!