Why does the check engine light in my G2500 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your G2500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my GMC G2500 making engine noise?

Unusual noises can signal a problem with your GMC G2500 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC G2500 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 use water in my GMC G2500 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What could cause my G2500 engine to suddenly stop?

Your G2500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs GMC G2500 engines?

Your local Firestone Complete Auto Care fixes GMC G2500 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 1985 GMC G2500

Learn about

1985 GMC G2500 Trim Options

Select your GMC G2500 trim level to learn more about GMC-recommended engine repair. Even GMC G2500 parts will get older and change.

V6/4.3L

V8/5.0L

V8/5.7L

V8/6.2L

GMC G2500 Repairs and Services

Nothing lasts forever. Even your GMC G2500’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 1985 GMC G2500 repairs.

We Care for GMC G2500 Engines

The GMC G2500 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. If the unexpected strikes, you may search the internet frantically for quick and affordable 1985 GMC G2500 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 G2500 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 1985 GMC G2500 Check Engine Light Is On

If your G2500 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. Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your G2500 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine rattling, burning smells, or a sinking feeling that something’s wrong.

GMC G2500 Engine Repair

If your 1985 G2500 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 can wait, 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 1985 G2500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the serpentine belt, oil gasket, sensors, or another part.

1985 GMC G2500 Engine Q&A

Why does the check engine light in my G2500 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. It’s just your G2500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my GMC G2500 making engine noise? Unusual noises can signal a problem with your GMC G2500 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC G2500 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 use water in my GMC G2500 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What could cause my G2500 engine to suddenly stop? Your G2500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs GMC G2500 engines? Your local Firestone Complete Auto Care fixes GMC G2500 engines. Book an appointment today! We have thousands of locations across the country.