Why does the check engine light in my C1500 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my GMC C1500 making engine noise?

Unusual noises can signal a problem with your GMC C1500 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. 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 my GMC C1500 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is 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?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your C1500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my C1500 engine suddenly stop?

If your C1500 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 C1500 repair?

Your local Firestone Complete Auto Care fixes GMC C1500 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 1991 GMC C1500

Learn about

1991 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.

V6/4.3L

V8/5.0L

V8/5.7L

V8/6.2L

GMC C1500 Repairs and Services

Nothing stays the same forever. Even your GMC C1500's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1991 GMC C1500 repairs.

We Care for GMC C1500 Engines

The GMC C1500 is respected for its 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 1991 GMC C1500 engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC C1500 engines. Schedule an appointment if you're experiencing problems that could require engine repair. 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 1991 GMC C1500

As soon as your C1500 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel, Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your C1500 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine rattling, oil leaks, or engine misfiring.

GMC C1500 Engine Repair

If your 1991 C1500 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We never do any work without your sign-off. If a repair can wait, we'll let 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 serpentine belt, valve guide seal, sensors, or another part.

Engine Q&A 1991 GMC C1500

Why does the check engine light in my C1500 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my GMC C1500 making engine noise? Unusual noises can signal a problem with your GMC C1500 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. 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 my GMC C1500 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, flooring the gas pedal while the car is 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? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your C1500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my C1500 engine suddenly stop? If your C1500 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 C1500 repair? Your local Firestone Complete Auto Care fixes GMC C1500 engines. Book an appointment today! We have thousands of locations across the country.