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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.

GM planning to put its fullsize pickups on a big diet, too

General Motors is just coming off a complete redesign of the Chevrolet Silverado and GMC Sierra for 2014, but in the US fullsize truck market, there is no rest for the weary. According to Reuters, plans are already unfurling for both trucks to drop pounds from their curb weight over the next few years, but this will unlikely be able to keep pace with the 700-pound diet targeted for the next-generation Ford F-150, a truck expected to debut late next year.
The biggest weight reduction for these trucks might not be available until the next full redesign, which will likely happen around 2019, but the article says that smaller updates could shave pounds in the meantime. Two examples given include an "aluminum-intensive" version of the Silverado that could shed 250 pounds and debut around the same time as the lighter-weight, aluminum-bodied 2015 Ford, and there is also talk of reducing weight for driveline components such as axles and driveshafts. These changes are all part of an attempt to meet strict new fuel economy standards coming in 2017, targets which will get even tougher in 2025.

GMC SIerra Denali is ready to live the high life

Between the information for the 2014 Chevrolet Silverado High Country and the accidently leaked picture on GMC's consumer site, it didn't take much imagination to envision what the 2014 GMC Sierra Denali would be like. But here it is. Going on sale this fall, the 2014 Sierra Denali will continue to be the most luxurious pickup truck in the General Motors portfolio, while getting more power and technology than ever before.
Like previous models, the 2014 Sierra Denali stands out from lower Sierra models with a big cheese-grater chrome grille, 20-inch chrome wheels and body-color bumpers. Inside, the Denali gets plenty of leather with contrasting stitching, but this is where GMC really steps up from the Silverado High Country with real aluminum trim and a new customizable eight-inch driver display in the gauge cluster. Standard features will include heated and cooled front bucket seats, the Intellilink infotainment system with Bose audio, while the options list offers a Driver Alert Package (with forward collision alert and lane departure warning), a rear-seat entertainment system and a Z71 Off-Road Package.
As for power, the standard engine will be the 5.3-liter EcoTec3 V8 with its 355 horsepower, and the optional engine will be the new 6.2-liter V8. Although official power figures for the bigger engine aren't in yet, GM is finally putting some estimates on paper expecting around 420 horsepower and 450 pound-feet of torque to go with a 12,000-pound towing capacity. The new Sierra Denali will be available in either two- or four-wheel drive. Scroll down for more details listed in the official press release.