2003 Gmc Yukon Xl 1500 Denali Sport Utility 4-door 6.0l on 2040-cars

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GM 6.2L EcoTec V8 rated at 21 mpg by the EPA

General Motors is already laying claim to best-in-class power for its new 6.2-liter V8 that will be offered in the 2014 Chevy Silverado and GMC Sierra this fall, and now it has released fuel economy numbers for the big engine. Available as an option on the Silverado LTZ and High Country (shown above) models as well as the the Sierra SLT and Denali trims, the 6.2L EcoTec3 V8 will return 15 miles per gallon in the city and 21 mpg on the highway on rear-wheel-drive trucks; these numbers drop by one mpg each on four-wheel-drive models.
These estimates are in addition to the engine's 420 horsepower, 460 pound-feet of torque and max trailering capacity of 12,000 pounds, and considering all that power it's not terribly far away from the fuel economy of GM's equally new 4.3-liter V6 and its rating of 18 mpg city and 24 mpg highway. This announcement comes just days after a report indicated that GM is unable to keep up with the demand of the 5.3-liter V8 in the fullsize Chevy and GMC trucks due to supplier issues. GM's official press release for the 6.2-liter V8's fuel economy is posted below.

2014 Chevrolet Silverado and GMC Sierra show all their sides in Detroit

There could hardly be more riding on the next-generation General Motors full-size pickup trucks, so the automaker has wisely made sure to have a selection of different models on hand at the Detroit Auto Show to show off. The 2014 Chevrolet Silverado and 2014 GMC Sierra were both officially introduced last month at a stand-alone reveal, and now they'll be on display for the public to see in various body configurations and trim levels.
The Silverado LTZ Crew Cab and Sierra SLE Extended Cab are aimed at providing more of a high-end pickup experience, while the Silverado LT Z71 Extended Cab and Sierra SLT Z71 Crew Cab should have off-road fans scouting out their favorite trails. The crew cab trucks won't go into production until sometime during the second quarter of this year - with other bodystyles coming later in the year - but we have plenty of live images from Detroit for you to enjoy.

GMC Canyon will debut in Detroit

With the debut of the Chevrolet Colorado at November's Los Angeles Auto Show, perhaps it was only a matter of time before we saw the small truck's GMC counterpart. That time will be January, as we've received official confirmation that the GMC Canyon will be revived at next month's North American International Auto Show in Detroit.
The news came in the latest issue of the Detroit Auto Show's newsletter, NAIAS Connect. The article hasn't been posted online quite yet, but it details the Canyon as one of the world production debuts slated for the show.
While we've heard rumors that the Canyon would arrive in Detroit, this is our first concrete bit of evidence. As we've detailed before, we expect the Canyon to be stylistically quite different than the Colorado, though the underpinnings will be shared. The teaser image we have above is currently our only look at the new truck. We'll hopefully have more details in the next few weeks as the GMC Canyon draws closer to its official debut.