2012 Gmc Sierra 2500 Slt ** Z71 ** 4x4 * Leather , Crew Cab , Diesel , 4wd , 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.

J.D. Power customer survey of dealers counts Cadillac, Buick as big winners

Cadillac and Buick have taken the trophies in J.D. Power's latest Customer Service Index Study examining satisfaction with dealer service. Surveying more than 90,000 owners and lessees of 2009-2013 model-year cars, the study found that those with pre-paid maintenance packages were ten percent more likely to buy their next car from the same brand.
Dealer satisfaction scores have improved overall, Cadillac nabbed the luxury segment ahead of Audi and Lexus, taking the crown that Lexus held last year. Buick keeps the mass-market dealer satisfaction win in the family, finishing ahead of Volkswagen and last year's winner GMC. The study also found that service department use of tablets increased customer satisfaction, as did "best practices" like "providing helpful advice." Who knew?
You can find details on those and more findings in the press release below.

GM trademarks 'GearOn,' possibly for pickups

On May 27, a week before General Motors applied for a trademark for the word "Zora," GM filed a trademark application at the US Patent and Trademark Office for "GearOn," characterized as a "truck bed cargo system comprised of tiered storage cross rails, utility rack stanchions, cargo dividers and cargo tie down rings."
We have no idea what it will be or if we'll see it used on anything, but GM Authority reckons it could be GM's name for a pickup truck feature to rival the BoxLink system Ford introduced on the 2015 F-150. BoxLink has been described as having "dozens of configurations of stowable cargo ramps and lockable die-cast aluminum tie-down cleats," giving owners the ability to arrange the bed in they way they need and load unwieldy items like motorcycles without needing extra equipment.
Getting purely speculative, a month ago GM pickup truck engineers said there would be more and more regular updates for the Chevrolet Silverado and GMC Sierra starting next year. Beyond the suspected capability and fuel economy changes GearOn could be one of the "neat things coming in a whole host of areas."