Why does the check engine light come on when I start my K2500?

It’s usually normal for your check engine light to turn on upon ignition. This is just your K2500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are GMC K2500 engine noises bad?

Strange under-the-hood noises can point to problems within your GMC K2500 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my GMC K2500 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is 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 put water in my GMC K2500 radiator?

While it’s not recommended, you can use water in your K2500 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause the engine in my K2500 to suddenly stop?

If your K2500 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 K2500 repair?

Your local Firestone Complete Auto Care fixes GMC K2500 engines. Book an appointment today! We have thousands of locations across the country.

1986 GMC K2500 Engine Repair

Learn about

1986 GMC K2500 Trim Options

Select your GMC K2500 trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

L6/4.8L

V8/5.7L

V8/6.2L

Repairs for Your 1986 GMC K2500

Nothing lasts forever. Even your GMC K2500's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1986 GMC K2500 repairs.

We Know GMC K2500 Engines

GMC K2500 engines are known for their reliability. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. If they do, you’ll have to find a dependable 1986 GMC service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service GMC K2500 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 1986 GMC K2500 Check Engine Light Is On

If your K2500 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, and it won’t go away by ignoring it. Possible causes can include a failing 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 K2500 issues diagnosed and our expert techs will get the root of the problem. engine rattling, oil leaks, or engine misfiring.

Engine Repairs for Your 1986 K2500

When your GMC K2500 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 1986 K2500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the serpentine belt, motor oil seal, sensors, or a different component.

Questions About 1986 GMC K2500 Engines

Why does the check engine light come on when I start my K2500? It’s usually normal for your check engine light to turn on upon ignition. This is just your K2500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are GMC K2500 engine noises bad? Strange under-the-hood noises can point to problems within your GMC K2500 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my GMC K2500 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is 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 put water in my GMC K2500 radiator? While it’s not recommended, you can use water in your K2500 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause the engine in my K2500 to suddenly stop? If your K2500 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 K2500 repair? Your local Firestone Complete Auto Care fixes GMC K2500 engines. Book an appointment today! We have thousands of locations across the country.