Sierra

Say it with us: 397 horsepower and 765 pound-feet of torque. That's what General Motors has been able to extract from its new B20-capable 6.6-liter Duramax V8 diesel engine in the GMC Sierra HD and Chevrolet Silverado HD, ...

Pickup trucks have always been a major component for any successful full-line automaker here in the United States, and, even though sales are down, it doesn't seem likely this will change any time soon. What will change, ...

One rule that all clunked cars needed to adhere to was a maximum rating of 18 MPG from the federal government, right? What wasn't required was that the clunked car be considered dirty. After all, it's pretty clear that CNG vehicles burn clean, but that didn't stop 232 of them from meeting their ...

A couple years ago, the battle of the pickup trucks was all about power and towing capabilities. Now, with volatile fuel prices and an increased focus on the environment, fuel efficiency is the new battleground. For the 2009 model year, the GMC Sierra and Chevy Silverado XFE took fuel economy up ...

The Washington Auto Show is over and I have news of three new hybrids from GM. I asked GM's car show floor specialists which cars GM plan to turn into hybrids? I was told there would be an Acadia and Sierra hybrid by a GMC specialist and Outlook hybrid by a Saturn specialist. I don't think GMC, ...

There have been a lot of promotions in recent years to encourage people to buy new cars – green and otherwise – in the United States like zero percent financing and tax credits. Now, GM is offering buyers of their 2006 and 2007 FlexFuel models a $1,000 voucher card to buy fuel. Green ...