Why does the check engine light in my K3500 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are GMC K3500 engine noises bad?

Unusual noises can signal a problem with your GMC K3500 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 be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my GMC K3500 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car 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.

Is it okay to put water in my GMC K3500 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 K3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my K3500 engine suddenly stop?

Your K3500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Where can I go for GMC K3500 repair?

Your local Firestone Complete Auto Care fixes GMC K3500 engines. Book an appointment today! We have thousands of locations across the country.

1986 GMC K3500 Engine Repair

Learn about

1986 GMC K3500 Trim Options

Select your GMC K3500 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

V8/7.4L

Repairs for Your 1986 GMC K3500

Nothing lasts forever. Even your GMC K3500’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 1986 GMC K3500 repairs.

We Know GMC K3500 Engines

GMC K3500 engines are known for their reliability. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Sometimes plans go sideways. 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 K3500 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.

My 1986 GMC K3500 Check Engine Light Is On

An illuminated check engine light on your GMC K3500 is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your fuel injection, Possible causes can include a failing oxygen sensor, worn spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your K3500 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. rattling sounds, burning smells, or engine misfiring.

Engine Repairs for Your 1986 K3500

When your GMC K3500 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 can wait, 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. Turn to Firestone Complete Auto Care for your 1986 K3500 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the timing chain or belt, oil gasket, ignition coil, or other parts.

Questions About 1986 GMC K3500 Engines

Why does the check engine light in my K3500 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are GMC K3500 engine noises bad? Unusual noises can signal a problem with your GMC K3500 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 be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my GMC K3500 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car 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.
Is it okay to put water in my GMC K3500 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 K3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my K3500 engine suddenly stop? Your K3500 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Where can I go for GMC K3500 repair? Your local Firestone Complete Auto Care fixes GMC K3500 engines. Book an appointment today! We have thousands of locations across the country.