Why does the check engine light in my Sierra 1500 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your Sierra 1500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my GMC engine sound different?

Strange under-the-hood noises can point to problems within your GMC Sierra 1500 engine. Tapping or knocking could mean you need an oil change. 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 my GMC Sierra 1500 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my GMC Sierra 1500 radiator?

While it’s not recommended, you can use water in your Sierra 1500 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.

Why did my Sierra 1500 engine suddenly stop?

There are different reasons your Sierra 1500 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 can repair my GMC Sierra 1500 engine?

Your local Firestone Complete Auto Care has you covered with expert Sierra 1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

1999 GMC Sierra 1500 Engine Repair

Learn about

1999 GMC Sierra 1500 Trim Options

Select your GMC Sierra 1500 trim level to learn more about GMC-recommended engine repair. Even GMC Sierra 1500 parts will get older and change.

V6/4.3L

V8/4.8L

V8/5.3L

1999 GMC Sierra 1500 Repair

Nothing lasts forever. Even your GMC Sierra 1500’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 1999 GMC Sierra 1500 services.

We’re Trained to Care for GMC Sierra 1500 Engines

The GMC Sierra 1500 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 sideways sometimes. If they do, you’ll have to find a dependable 1999 GMC 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 GMC Sierra 1500 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Check Engine Light on 1999 GMC Sierra 1500

If your Sierra 1500 check engine light is on, it’s time to get it looked at. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s starter, Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Bring your Sierra 1500 to Firestone Complete Auto Care to get computerized diagnostics and we’ll figure out why that check engine light is giving you grief. Other signs your GMC Sierra 1500 engine needs some TLC are oil leaks, or a sinking feeling that something’s wrong.

1999 Sierra 1500 Engine Services

If your 1999 GMC Sierra 1500 needs engine repair, our technicians will provide you with a thorough explanation beforehand. 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. By choosing Firestone Complete Auto Care for Sierra 1500 engine repairs and you can feel good knowing that we only use GMC-compliant replacement parts such as the timing belt, motor oil seal, ignition coil, or another part.

Questions About 1999 GMC Sierra 1500 Engines

Why does the check engine light in my Sierra 1500 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. It’s just your Sierra 1500 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my GMC engine sound different? Strange under-the-hood noises can point to problems within your GMC Sierra 1500 engine. Tapping or knocking could mean you need an oil change. 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 my GMC Sierra 1500 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my GMC Sierra 1500 radiator? While it’s not recommended, you can use water in your Sierra 1500 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.
Why did my Sierra 1500 engine suddenly stop? There are different reasons your Sierra 1500 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 can repair my GMC Sierra 1500 engine? Your local Firestone Complete Auto Care has you covered with expert Sierra 1500 engine repair. Schedule an appointment today and see us at one of our thousands of locations.