The GM Authority staff is comprised of columnists, interns, and other reporters who provide coverage of the latest General Motors news.

When it comes to GM engines, the Chevy small block and LS motors get most of the love and attention. But there's another Chevy engine deserving of recognition for its legacy in the world of GM trucks.

Also sold as the GMC Savana, the Chevrolet Express full-size van has been with us since 1995. Facelifted for the 2003 model year, the Express is as old as dirt, but it continues to serve General ...

It had to be done. In one corner of the shop was our fresh 4.3L Chevy V-6 (see "The 3/4 350," Aug. '02), and at the other end was Vortech's new centrifugal supercharger system for carbs ("Vortech ...

DETROIT- General Motors Co.’s 2014 lineup of full-size pickups with a new standard V6 engine will achieve up to 24 miles per gallon highway. The Detroit-based automaker Wednesday said the 2014 ...

Both of these Silverado engines feature continuously variable valve timing and Active Fuel Management (AFM), which shuts down cylinders to improve fuel economy when only small amounts of power are ...

The Motor City truck wars are hotter than ever with Ford, Ram and GM each recently revamping their pickup lineup. The most recent contender: GM's redesigned Chevrolet Silverado and GMC Sierra. In ...

General Motors has revealed the specs of the standard 4.3-liter V6 engine that will power the GMC Sierra / Chevrolet Silverado duo of full size pickup trucks, with the strongest selling point of the ...

We were more excited to buzz this turkey on the dyno than we usually are with some whumpin' big-block. Why? It's different. Not too many people build V-6s any more. Perhaps we found out why, but we ...