Why does my G3500’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your G3500 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my GMC G3500 making engine noise?

Unusual noises can signal a problem with your GMC G3500 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to 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 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 G3500 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir 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.

Who repairs GMC G3500 engines?

Your local Firestone Complete Auto Care offers GMC G3500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 1994 GMC G3500

Learn about

1994 GMC G3500 Trim Options

Select your GMC G3500 trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V6/4.3L

V8/5.7L

V8/6.5L

V8/7.4L

Repairs for Your 1994 GMC G3500

Nothing lasts forever. Even your GMC G3500's many parts and pieces. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 1994 GMC G3500.

We Care for GMC G3500 Engines

GMC G3500 drivers trust that their G3500 will take them near and far. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. When they do, you might find yourself searching for 1994 GMC G3500 engine repair or replacement parts. 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 G3500 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 1994 GMC G3500

An illuminated check engine light on your GMC G3500 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission system that won't go away on its own. Potential causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your G3500 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine pinging noises, oil leaks, or engine misfiring.

Engine Repairs for Your 1994 G3500

If your 1994 G3500 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. 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 seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for G3500 engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — cambelt, oil gasket, fuses, or another part.

Engine Q&A 1994 GMC G3500

Why does my G3500’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your G3500 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my GMC G3500 making engine noise? Unusual noises can signal a problem with your GMC G3500 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to 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 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 G3500 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir 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.
Who repairs GMC G3500 engines? Your local Firestone Complete Auto Care offers GMC G3500 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!