Why does my Sierra 2500 HD’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 a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are GMC Sierra 2500 HD engine noises bad?

Unusual noises can signal a problem with your GMC Sierra 2500 HD engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my GMC Sierra 2500 HD engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. 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 Sierra 2500 HD radiator?

While it’s not recommended, you can use water in your Sierra 2500 HD 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 2500 HD engine suddenly stop?

Your Sierra 2500 HD car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs GMC Sierra 2500 HD engines?

Your local Firestone Complete Auto Care has you covered with expert Sierra 2500 HD engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 2014 GMC Sierra 2500 HD

Learn about

2014 GMC Sierra 2500 HD Trim Options

Select your GMC Sierra 2500 HD trim level to learn more about GMC-recommended engine repair. Even GMC Sierra 2500 HD parts will get older and change.

V8/6.0L

V8/6.6L

Repairs for Your 2014 GMC Sierra 2500 HD

Stuff wears out. Even your GMC Sierra 2500 HD’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 2014 GMC Sierra 2500 HD repairs.

We Care for GMC Sierra 2500 HD Engines

GMC Sierra 2500 HD engines are known for their reliability. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Things can go sideways sometimes. When they do, you might find yourself searching for 2014 GMC Sierra 2500 HD engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your GMC Sierra 2500 HD engine will be in good hands. 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 2014 GMC Sierra 2500 HD

An illuminated check engine light on your GMC Sierra 2500 HD 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 or emission system that won't go away on its own. Possible causes can include a failing oxygen sensor, bad 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 2500 HD in for an on-board diagnostic check and our expert techs will get the root of the problem. engine rattling, oil leaks, or misfiring.

GMC Sierra 2500 HD Engine Repair

If your 2014 GMC Sierra 2500 HD needs engine repair, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair isn’t urgent right now, we’ll let 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 2500 HD 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 a different component.

2014 GMC Sierra 2500 HD Engine Q&A

Why does my Sierra 2500 HD’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 a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are GMC Sierra 2500 HD engine noises bad? Unusual noises can signal a problem with your GMC Sierra 2500 HD engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my GMC Sierra 2500 HD engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. 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 Sierra 2500 HD radiator? While it’s not recommended, you can use water in your Sierra 2500 HD 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 2500 HD engine suddenly stop? Your Sierra 2500 HD car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs GMC Sierra 2500 HD engines? Your local Firestone Complete Auto Care has you covered with expert Sierra 2500 HD engine repair. Schedule an appointment today and see us at one of our thousands of locations.