Why does my K1500 Suburban’s check engine light come on when I start it?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your K1500 Suburban firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are GMC K1500 Suburban engine noises bad?

Strange engine sounds can be a sign something’s off in your GMC K1500 Suburban. 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 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 K1500 Suburban 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 slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my GMC K1500 Suburban 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 K1500 Suburban when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause a K1500 Suburban engine to suddenly stop?

If your K1500 Suburban 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 K1500 Suburban repair?

Your local Firestone Complete Auto Care offers GMC K1500 Suburban engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Reliable Repairs for 1986 GMC K1500 Suburban Engines

Learn about

1986 GMC K1500 Suburban Trim Options

Select your GMC K1500 Suburban trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V8/5.7L

V8/6.2L

1986 GMC K1500 Suburban Repair

Nothing stays the same forever. Even your GMC K1500 Suburban's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 1986 GMC K1500 Suburban repairs.

We Care for GMC K1500 Suburban Engines

The GMC K1500 Suburban is respected for its reliability. That might be why you bought it in the first place. 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 K1500 Suburban 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.

My 1986 GMC K1500 Suburban Check Engine Light Is On

An illuminated check engine light on your GMC K1500 Suburban is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your combustion, Potential causes may include a faulty oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your K1500 Suburban in for an on-board diagnostic check and our expert techs will get the root of the problem. engine rattling, oil leaks, or engine misfiring.

GMC K1500 Suburban Engine Repair

When your GMC K1500 Suburban engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We make recommendations, but you make the final decision. If a repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for K1500 Suburban engine repairs and you can feel good knowing that we only use GMC-compliant replacement parts such as the cambelt, oil gasket, sensors, or a different component.

Questions About 1986 GMC K1500 Suburban Engines

Why does my K1500 Suburban’s check engine light come on when I start it? It's okay if your check engine light comes on when you first start your vehicle. It’s just your K1500 Suburban firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are GMC K1500 Suburban engine noises bad? Strange engine sounds can be a sign something’s off in your GMC K1500 Suburban. 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 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 K1500 Suburban 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 slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my GMC K1500 Suburban 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 K1500 Suburban when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause a K1500 Suburban engine to suddenly stop? If your K1500 Suburban 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 K1500 Suburban repair? Your local Firestone Complete Auto Care offers GMC K1500 Suburban engine repair. Schedule an appointment today at one of our thousands of locations nationwide!