Why does my S15’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your S15 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are GMC S15 engine noises bad?

Strange engine sounds can be a sign something’s off in your GMC S15. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate 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 S15 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I add water to my GMC S15 radiator?

While it’s not recommended, you can use water in your S15 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause the engine in my S15 to suddenly stop?

If your S15 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who fixes GMC S15 engines?

Your local Firestone Complete Auto Care has you covered with expert S15 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 1989 GMC S15

Learn about

1989 GMC S15 Trim Options

Select your GMC S15 trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

L4/2.5L

V6/2.8L

V6/4.3L

1989 GMC S15 Repair

Stuff wears out. Even your GMC S15's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 1989 GMC S15 repairs.

We’re Trained to Care for GMC S15 Engines

The GMC S15 is respected for its reliability. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If the unexpected strikes, you may search the internet frantically for quick and affordable 1989 GMC S15 engine repairs. That's when it's time to head to Firestone Complete Auto Care. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your GMC S15 engine will be in good hands. 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.

Illuminated Check Engine Light on 1989 GMC S15

An illuminated check engine light on your GMC S15 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 car’s ignition, Potential causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your S15 issues diagnosed and we’ll figure out why that check engine light is giving you grief. engine pinging noises, essential fluid leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 1989 S15

If your 1989 S15 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a service can wait, we’ll make sure 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. Choose Firestone Complete Auto Care for GMC S15 engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the serpentine belt, valve guide seal, fuses, or another part.

Engine Q&A 1989 GMC S15

Why does my S15’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your S15 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are GMC S15 engine noises bad? Strange engine sounds can be a sign something’s off in your GMC S15. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate 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 S15 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I add water to my GMC S15 radiator? While it’s not recommended, you can use water in your S15 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause the engine in my S15 to suddenly stop? If your S15 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who fixes GMC S15 engines? Your local Firestone Complete Auto Care has you covered with expert S15 engine repair. Schedule an appointment today and see us at one of our thousands of locations.