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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your C1500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my GMC C1500 making engine noise?

Strange under-the-hood noises can point to problems within your GMC C1500 engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my 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 accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my GMC C1500 radiator?

It’s not recommended you put water in your C1500 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

Why did my C1500 engine suddenly stop?

Your C1500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes GMC C1500 engines?

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 1990 GMC C1500

Learn about

1990 GMC C1500 Trim Options

Select your GMC C1500 trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V6/4.3L

V8/5.0L

V8/5.7L

V8/6.2L

GMC C1500 Repairs and Services

Nothing lasts forever. Even your GMC C1500’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 1990 GMC C1500 services.

We Care for GMC C1500 Engines

GMC C1500 drivers trust that their C1500 will take them near and far. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 1990 GMC C1500 engine repairs. 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 C1500 engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 1990 GMC C1500 Check Engine Light Is On

An illuminated check engine light on your GMC C1500 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 combustion, Possible causes can include a failing oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the 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. engine pinging noises, essential fluid leaks, or engine misfiring.

GMC C1500 Engine Repair

If your 1990 C1500 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 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. Turn to Firestone Complete Auto Care for your 1990 C1500 engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — cambelt, engine oil seal, sensors, or another part.

Questions About 1990 GMC C1500 Engines

Why does the check engine light come on when I start my C1500? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your C1500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my GMC C1500 making engine noise? Strange under-the-hood noises can point to problems within your GMC C1500 engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my 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 accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my GMC C1500 radiator? It’s not recommended you put water in your C1500 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
Why did my C1500 engine suddenly stop? Your C1500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes GMC C1500 engines? Your local Firestone Complete Auto Care fixes GMC C1500 engines. Book an appointment today! We have thousands of locations across the country.