Gmc Sierra 2500hd Duramax 4x4 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.

Chevy Express 1500, GMC Savana 1500 get the axe

Fans of truck-based, light-duty vans can officially pour one out for the Chevrolet Express 1500 and GMC Savana 1500, as General Motors has officially put its long-serving big/little rigs out to pasture. Things aren't quite as sad as they sound, though. The heavier-duty 2500 and 3500 vans will soldier on, in order to duke it out with the largest members of Ram ProMaster, Ford Transit and Mercedes-Benz Sprinter families.
The move does seem to make a lot of sense. According to GM, customers only purchase the 1500-spec Chevrolet 23 percent of the time, while the GMC captures a mere 7 percent of the Savana family's sales. With numbers like that, it's no shock that GM thinks it can shift some of its buyers into its van family's more capable variants. "We knew we could move a lot of our 1500 customers into 2500-series territory," said GM's Joe Langhauser, the product manager for the company's full-size vans.
It's not just simple sales figures dictating the move, though. The 1500 line is taking up some valuable factory space that will be better spent on an eagerly anticipated new product.

Pics Aplenty: Meet the 2014 Chevrolet Silverado and GMC Sierra [w/poll]

Today was a pretty big day for General Motors, debuting the all-new Chevrolet Silverado and GMC Sierra light-duty pickup trucks ahead of their official showcase at the 2013 Detroit Auto Show. And now that the dust has settled at GM's big reveal event, we've had a chance to snap dozens of photos of the new pickup pair from every angle.
We already told you the important bits earlier today (click here in case you missed it), but let's recap. Under the hood are three new engines - a 4.3-liter V6, 5.3-liter V8 and 6.2-liter V8 (you know, a version of the small-block that'll also be found under the hood of the C7 Corvette), all mated to six-speed automatic transmissions. The 2014 model year marks the return of the Z71 off-road package with Rancho shocks, front tow hooks and beefier underbody protection. Inside, there's a host of new technology and a greater focus on better quality and refinement.
Some of the nitty-gritty specifics (like engine output numbers and fuel economy) have yet to be revealed, and since we haven't driven the finished products yet, it's hard to say how these trucks will fare against rivals like the Ram 1500 and Ford F-150. For now, we can only judge these two books by their covers, and while we do like the designs of the new trucks, we Autoblog staffers are torn on exactly which one looks best.