Why does the check engine light come on when I start my Sierra 2500 HD?

It's okay if your check engine light comes on when you first start your vehicle. This is just your Sierra 2500 HD testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are GMC Sierra 2500 HD engine noises bad?

Strange under-the-hood noises can point to problems within your GMC Sierra 2500 HD 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 coming from the brakes, not the engine.

What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 2500 HD engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is 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.

Is it okay to put water in my GMC Sierra 2500 HD 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 could cause my Sierra 2500 HD engine to suddenly stop?

If your Sierra 2500 HD car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for GMC Sierra 2500 HD repair?

Your local Firestone Complete Auto Care offers GMC Sierra 2500 HD engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

2016 GMC Sierra 2500 HD Engine Repair

Learn about

2016 GMC Sierra 2500 HD Trim Options

Select your GMC Sierra 2500 HD trim level to learn more about GMC-recommended engine repair. Use the following chart to find information.

V8/6.0L

V8/6.6L

GMC Sierra 2500 HD Repairs and Services

Nothing stays the same forever. Even your GMC Sierra 2500 HD’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2016 GMC Sierra 2500 HD repairs.

We’re Trained to Care for GMC Sierra 2500 HD Engines

The GMC Sierra 2500 HD is respected for its 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 wrong on the road. When they do, you might find yourself searching for 2016 GMC Sierra 2500 HD engine repair or replacement parts. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service GMC Sierra 2500 HD engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Check Engine Light on 2016 GMC Sierra 2500 HD

As soon as your Sierra 2500 HD check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your Sierra 2500 HD issues diagnosed and we'll determine exactly why your check engine light is on. Other signs your GMC Sierra 2500 HD engine needs some TLC are essential fluid leaks, or a sinking feeling that something’s wrong.

2016 Sierra 2500 HD Engine Services

When your GMC Sierra 2500 HD 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 service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, 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 Sierra 2500 HD engine repairs and you can feel confident knowing that we use GMC-approved parts and components like the timing chain or belt, oil gasket, sensors, or a different component.

2016 GMC Sierra 2500 HD Engine Q&A

Why does the check engine light come on when I start my Sierra 2500 HD? It's okay if your check engine light comes on when you first start your vehicle. This is just your Sierra 2500 HD testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are GMC Sierra 2500 HD engine noises bad? Strange under-the-hood noises can point to problems within your GMC Sierra 2500 HD 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 coming from the brakes, not the engine.
What could damage a GMC engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your GMC Sierra 2500 HD engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is 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.
Is it okay to put water in my GMC Sierra 2500 HD 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 could cause my Sierra 2500 HD engine to suddenly stop? If your Sierra 2500 HD car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for GMC Sierra 2500 HD repair? Your local Firestone Complete Auto Care offers GMC Sierra 2500 HD engine repair. Schedule an appointment today at one of our thousands of locations nationwide!