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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Yukon XL firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my GMC Yukon XL making engine noise?

Strange under-the-hood noises can point to problems within your GMC Yukon XL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my GMC Yukon XL 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my GMC Yukon XL 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 Yukon XL when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my Yukon XL to suddenly stop?

There are different reasons your Yukon XL 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 fixes GMC Yukon XL engines?

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

Engine Repairs for Your 2018 GMC Yukon XL

Learn about

2018 GMC Yukon XL Trim Options

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

V8/5.3L

V8/6.2L

2018 GMC Yukon XL Repair

Nothing lasts forever. Even your GMC Yukon XL’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 2018 GMC Yukon XL services.

We’re Trained to Care for GMC Yukon XL Engines

GMC Yukon XL drivers trust that their Yukon XL will take them near and far. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Sometimes plans go sideways. When they do, you might find yourself searching for 2018 GMC Yukon XL engine repair or replacement parts. 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 Yukon XL engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 2018 GMC Yukon XL

If your Yukon XL check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your car’s ignition, Causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few possible causes. Bring your Yukon XL to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine rattling, oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2018 Yukon XL

If your 2018 GMC Yukon XL needs engine repair, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. 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. By choosing Firestone Complete Auto Care for Yukon XL engine repairs and you can drive easy knowing that we use GMC-approved parts and fluids — timing belt, oil gasket, fuses, or other parts.

Engine Q&A 2018 GMC Yukon XL

Why does the check engine light come on when I start my Yukon XL? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Yukon XL firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my GMC Yukon XL making engine noise? Strange under-the-hood noises can point to problems within your GMC Yukon XL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my GMC Yukon XL 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 pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my GMC Yukon XL 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 Yukon XL when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my Yukon XL to suddenly stop? There are different reasons your Yukon XL 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 fixes GMC Yukon XL engines? Your local Firestone Complete Auto Care has you covered with expert Yukon XL engine repair. Schedule an appointment today and see us at one of our thousands of locations.