Why does my K2500’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your K2500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my GMC K2500 making engine noise?

Strange under-the-hood noises can point to problems within your GMC K2500 engine. Knocking or tapping could be a symptom of low 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 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 K2500 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my GMC K2500 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.

Why did my K2500 engine 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.

Who can repair my GMC K2500 engine?

For GMC K2500 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

Engine Repairs for Your 1990 GMC K2500

Learn about

1990 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.

V6/4.3L

V8/5.0L

V8/5.7L

V8/6.2L

1990 GMC K2500 Repair

Nothing stays the same forever. Even your GMC K2500’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 1990 GMC K2500 repairs.

We Care for GMC K2500 Engines

GMC K2500 drivers trust that their K2500 will take them near and far. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If they do, you’ll have to find a dependable 1990 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 offers both trustworthy and affordable engine repairs.

Check Engine Light on 1990 GMC K2500

If your K2500 check engine light is on, it’s time to get it looked at. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s starter, Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Bring your K2500 in for an on-board diagnostic check and we’ll figure out why that check engine light is giving you grief. Other signs your GMC K2500 engine needs some TLC are essential fluid leaks, or engine misfiring.

Engine Repairs for Your 1990 K2500

If your 1990 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 provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for GMC K2500 engine repairs and you can feel good knowing that we only use GMC-compliant replacement parts such as the timing belt, oil gasket, ignition coil, or another part.

1990 GMC K2500 Engine Q&A

Why does my K2500’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your K2500 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my GMC K2500 making engine noise? Strange under-the-hood noises can point to problems within your GMC K2500 engine. Knocking or tapping could be a symptom of low 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 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 K2500 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my GMC K2500 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.
Why did my K2500 engine 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.
Who can repair my GMC K2500 engine? For GMC K2500 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.