Why does the check engine light come on when I start my G3500?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your G3500 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my GMC engine sound different?

Strange engine sounds can be a sign something’s off in your GMC G3500. Tapping or knocking could mean you're low on 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 a sign of brake problems rather than engine issues.

What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC G3500 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to my GMC G3500 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 G3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my G3500 to suddenly stop?

There are different reasons your G3500 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Where can I go for GMC G3500 repair?

Your local Firestone Complete Auto Care fixes GMC G3500 engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1990 GMC G3500 Engines

Learn about

1990 GMC G3500 Trim Options

Select your GMC G3500 trim level to learn more about GMC-recommended engine repair. Even GMC G3500 parts will get older and change.

V6/4.3L

V8/5.7L

V8/6.2L

V8/7.4L

GMC G3500 Repairs and Services

Stuff wears out. Even your GMC G3500’s engine parts and components will change. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 1990 GMC G3500.

We’re Trained to Care for GMC G3500 Engines

The GMC G3500 is respected for its reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 1990 GMC G3500 engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know GMC G3500 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Check Engine Light on 1990 GMC G3500

As soon as your G3500 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel injection, Potential causes may include a faulty oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your G3500 issues diagnosed and we’ll figure out why that check engine light is giving you grief. rattling sounds, burning smells, or engine misfiring.

GMC G3500 Engine Repair

When your GMC G3500 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. 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 provide you with the information you need to make an informed engine repair decision. By choosing Firestone Complete Auto Care for G3500 engine repairs and you can feel good knowing that we only use GMC-compliant replacement parts such as the timing chain or belt, valve guide seal, fuses, or another part.

1990 GMC G3500 Engine Q&A

Why does the check engine light come on when I start my G3500? It’s usually normal for your check engine light to turn on upon ignition. It’s just your G3500 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my GMC engine sound different? Strange engine sounds can be a sign something’s off in your GMC G3500. Tapping or knocking could mean you're low on 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 a sign of brake problems rather than engine issues.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC G3500 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to my GMC G3500 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 G3500 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my G3500 to suddenly stop? There are different reasons your G3500 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Where can I go for GMC G3500 repair? Your local Firestone Complete Auto Care fixes GMC G3500 engines. Book an appointment today! We have thousands of locations across the country.