GM Authority reader Willard asks why the Chevy Colorado uses a four cylinder engine while Nissan Frontier gets a V6. We answer in today's GM Authority Mailbag.

A Pontiac with a Corvette engine? Unthinkable in GM's early days -- but by the late 1990s, the savings offered by ...

The refreshed and improved 2025 Ram 1500 hit the market several months ago, but Canadian sales of the full-size pickup are ...

If you're looking for a V6 pick-up, you'll want one with the power to do everything you need, and the comfort that makes ...

The main argument will be with the F-Series, though, as they're the only ones retaining a good ol' V8 in the lineup whereas the Tundra has a twin-turbo V6 ... The GM-exclusive diesel engine ...

The 2025 Chevy Suburban and 2025 Ford Expedition go bumper to bumper in this full-size SUV battle. Which one delivers more ...

powered by a naturally aspirated 3.4-liter twin-dual-cam V6 engine, which is capable of generating 210 horsepower (213 metric horsepower) and 224 pound-feet (305 Newton meters). A four-speed GM ...

Transmission options include five or seven-speed automatic or six-speed manual, while a range of engine choices, including V6, V8 ... 5.1 surround sound system, GM's Stabilitrak ESC system ...

Another of the many lawsuits directed at GM over alleged excessive oil consumption by the GM Generation IV 5.3L V8 Vortec 5300 LC9 gasoline engine has been dismissed, this time by the U.S ...

Since its 2000 debut, various builds of the Duramax Turbo-Diesel engine have powered some of the most powerful and efficient ...

The 2025 GMC Sierra EV Denali now starts at $91,995, which is $7500 less than last year's Denali Edition 1. The electric Sierra now offers two battery packs, including a bigger Max pack with an ...