Why does the check engine light come on when I start my G1500?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your G1500 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are GMC G1500 engine noises bad?

Unusual noises can signal a problem with your GMC G1500 engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal 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 G1500 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 pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my GMC G1500 radiator?

It’s not recommended you put water in your G1500 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What could cause my G1500 engine to suddenly stop?

Reasons your G1500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who repairs GMC G1500 engines?

Your local Firestone Complete Auto Care has you covered with expert G1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Reliable Repairs for 1986 GMC G1500 Engines

Learn about

1986 GMC G1500 Trim Options

Select your GMC G1500 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

1986 GMC G1500 Repair

Stuff wears out. Even your GMC G1500's many parts and pieces. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 1986 GMC G1500.

We’re Trained to Care for GMC G1500 Engines

The GMC G1500 is respected for its reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If they do, you’ll have to find a dependable 1986 GMC service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC G1500 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Check Engine Light on 1986 GMC G1500

As soon as your G1500 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few possible causes. Bring your G1500 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine rattling, oil leaks, or misfiring.

1986 G1500 Engine Services

When your GMC G1500 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 service can wait, we’ll make sure 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 G1500 engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — timing belt, valve guide seal, fuses, or other parts.

Questions About 1986 GMC G1500 Engines

Why does the check engine light come on when I start my G1500? It's okay if your check engine light comes on when you first start your vehicle. It’s just your G1500 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are GMC G1500 engine noises bad? Unusual noises can signal a problem with your GMC G1500 engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal 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 G1500 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 pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my GMC G1500 radiator? It’s not recommended you put water in your G1500 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What could cause my G1500 engine to suddenly stop? Reasons your G1500 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs GMC G1500 engines? Your local Firestone Complete Auto Care has you covered with expert G1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.