Why does the check engine light come on when I start my C3500?

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my GMC C3500 making engine noise?

Strange under-the-hood noises can point to problems within your GMC C3500 engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate 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 C3500 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my GMC C3500 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 C3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause a C3500 engine to suddenly stop?

Reasons your C3500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who fixes GMC C3500 engines?

Your local Firestone Complete Auto Care fixes GMC C3500 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 1985 GMC C3500

Learn about

1985 GMC C3500 Trim Options

Select your GMC C3500 trim level to learn more about GMC-recommended engine repair. Even GMC C3500 parts will get older and change.

L6/4.8L

V8/5.7L

V8/6.2L

V8/7.4L

GMC C3500 Repairs and Services

Stuff wears out. Even your GMC C3500’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 C3500 services.

We Know GMC C3500 Engines

The GMC C3500 is respected for its reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 1985 GMC C3500 engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC C3500 engines. Schedule a courtesy inspection at the first sign of engine trouble. 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 1985 GMC C3500

If your C3500 check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your vehicle's ignition, 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. Stop by your local Firestone Complete Auto Care to get your C3500 issues diagnosed and our expert techs will get the root of the problem. engine rattling, oil leaks, or engine misfiring.

GMC C3500 Engine Repair

When your GMC C3500 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. 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. By choosing Firestone Complete Auto Care for C3500 engine repairs and you can feel good knowing that we only use GMC-compliant replacement parts such as the timing chain or belt, valve guide seal, ignition coil, or a different component.

1985 GMC C3500 Engine Q&A

Why does the check engine light come on when I start my C3500? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my GMC C3500 making engine noise? Strange under-the-hood noises can point to problems within your GMC C3500 engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate 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 C3500 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my GMC C3500 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 C3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause a C3500 engine to suddenly stop? Reasons your C3500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who fixes GMC C3500 engines? Your local Firestone Complete Auto Care fixes GMC C3500 engines. Book an appointment today! We have thousands of locations across the country.