Why does the check engine light come on when I start my C1500?

It’s usually normal for your check engine light to turn on upon ignition. This is just your C1500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my GMC engine sound different?

Strange under-the-hood noises can point to problems within your GMC C1500 engine. Knocking or tapping could be a symptom of low 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 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 C1500 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my GMC C1500 radiator?

While it’s not recommended, you can use water in your C1500 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.

What could cause my C1500 engine to suddenly stop?

Reasons your C1500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Where can I go for GMC C1500 repair?

Your local Firestone Complete Auto Care offers GMC C1500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 1999 GMC C1500

Learn about

1999 GMC C1500 Trim Options

Select your GMC C1500 trim level to learn more about GMC-recommended engine repair. Even GMC C1500 parts will get older and change.

V8/5.0L

V8/5.7L

1999 GMC C1500 Repair

Nothing lasts forever. Even your GMC C1500's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 1999 GMC C1500 services.

We Care for GMC C1500 Engines

The GMC C1500 is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 1999 GMC C1500 engine repairs. That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service GMC C1500 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.

Check Engine Light on 1999 GMC C1500

An illuminated check engine light on your GMC C1500 is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your or emission system that won't go away on its own. Possible causes can include a failing oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your C1500 issues diagnosed and our expert techs will get the root of the problem. Other signs it's time for GMC C1500 engine service might include essential fluid leaks, or engine misfiring.

1999 C1500 Engine Services

When your GMC C1500 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for C1500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the timing chain or belt, motor oil seal, ignition coil, or a different component.

Engine Q&A 1999 GMC C1500

Why does the check engine light come on when I start my C1500? It’s usually normal for your check engine light to turn on upon ignition. This is just your C1500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my GMC engine sound different? Strange under-the-hood noises can point to problems within your GMC C1500 engine. Knocking or tapping could be a symptom of low 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 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 C1500 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my GMC C1500 radiator? While it’s not recommended, you can use water in your C1500 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.
What could cause my C1500 engine to suddenly stop? Reasons your C1500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Where can I go for GMC C1500 repair? Your local Firestone Complete Auto Care offers GMC C1500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!