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 just your C1500 testing 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 engine sounds can be a sign something’s off in your GMC C1500. Tapping or knocking could mean you're low on 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 my GMC C1500 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to 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.

What could cause my C1500 engine to 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 repairs GMC C1500 engines?

Your local Firestone Complete Auto Care has you covered with expert C1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 1985 GMC C1500

Learn about

1985 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

Repairs for Your 1985 GMC C1500

Nothing lasts forever. Even your GMC C1500’s engine parts and components will change. We’re here to help when something stops working. Select a repair or category to learn more about 1985 GMC C1500 services.

We Care for GMC C1500 Engines

GMC C1500 engines are known for their reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Sometimes plans go sideways. If they do, you’ll have to find a dependable 1985 GMC service center — quick! 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. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 1985 GMC C1500 Check Engine Light Is On

If your C1500 check engine light is on, it’s time to get it looked at. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission system that won't go away on its own. Potential causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, 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, burning smells, or misfiring.

1985 C1500 Engine Services

If your 1985 C1500 engine needs repairs, 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. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We seek to give you all the info you need to make a smart decision about our services. Turn to Firestone Complete Auto Care for your 1985 C1500 engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — timing belt, valve guide seal, ignition coil, or a different component.

1985 GMC C1500 Engine Q&A

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 just your C1500 testing 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 engine sounds can be a sign something’s off in your GMC C1500. Tapping or knocking could mean you're low on 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 my GMC C1500 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to 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.
What could cause my C1500 engine to 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 repairs GMC C1500 engines? Your local Firestone Complete Auto Care has you covered with expert C1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.