Why does my G20’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. This is just your G20 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Chevrolet G20 engine noises bad?

Strange engine sounds can be a sign something’s off in your Chevrolet G20. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Chevrolet G20 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.

Can I add water to my Chevrolet G20 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 G20 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my G20 engine to suddenly stop?

Your G20 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 Chevrolet G20 repair?

Your local Firestone Complete Auto Care fixes Chevrolet G20 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 1991 Chevrolet G20

Learn about

1991 Chevrolet G20 Trim Options

Select your Chevrolet G20 trim level to learn more about Chevrolet-recommended engine repair. Even Chevrolet G20 parts will get older and change.

V6/4.3L

V8/5.0L

V8/5.7L

V8/6.2L

Repairs for Your 1991 Chevrolet G20

Stuff wears out. Even your Chevrolet G20’s engine parts and components will change. 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 1991 Chevrolet G20.

We Care for Chevrolet G20 Engines

The Chevrolet G20 is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If they do, you’ll have to find a dependable 1991 Chevrolet 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 Chevrolet G20 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 1991 Chevrolet G20 Check Engine Light Is On

An illuminated check engine light on your Chevrolet G20 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, Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your G20 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs it's time for Chevrolet G20 engine service might include oil leaks, or misfiring.

Chevrolet G20 Engine Repair

If your 1991 Chevrolet G20 needs engine repair, 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 isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. 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 1991 G20 engine repairs and you can feel confident knowing that we use Chevrolet-approved parts and components like the timing chain or belt, motor oil seal, fuses, or other parts.

1991 Chevrolet G20 Engine Q&A

Why does my G20’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. This is just your G20 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Chevrolet G20 engine noises bad? Strange engine sounds can be a sign something’s off in your Chevrolet G20. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Chevrolet G20 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.
Can I add water to my Chevrolet G20 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 G20 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my G20 engine to suddenly stop? Your G20 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 Chevrolet G20 repair? Your local Firestone Complete Auto Care fixes Chevrolet G20 engines. Book an appointment today! We have thousands of locations across the country.