In almost 25 years powering General Motors trucks and SUVs, the 6.6-liter Duramax V8 diesel engine has earned a loyal ...

It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but everything else may work fine. If that happens, it might be time ...

Need to replace your electric fuel pump? Here's a closer look at the top brands and aftermarket fuel pumps to help get you back on the road.

Discover the best fuel additives for 2025 to improve MPG, reduce emissions, and keep your engine running smoothly.

We answer exactly when you should use fuel additives for your engine and clean it the right way with the best diesel engine cleaners trusted by Parkers.

If you're new to being a diesel-vehicle owner, there's some important tips you need to know, including what type of coolant ...

GM is issuing a recall for the 6.2L V8 L87 gasoline engine, with some units receiving a new oil spec. The question is - will ...

The suit says GM told drivers to use thicker oil, which the plaintiffs allege makes SUVs and pickups less fuel efficient and more expensive to drive.

The standard GM distance-to-empty gauge can be vague, displaying LOW under 35 miles. Thankfully, there's a workaround to view a clearer mileage estimate.

In a wide-ranging interview, GM's president talks about the automaker's product blitz, Cadillac's EV push and fresh investments in V-8s, U.S. plants.