2005 Gmc Envoy Xl Denali 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.

GMC Hummer EV coming to Extreme E with Chip Ganassi Racing

The electric off-road racing series Extreme E is getting another famous face. This time it's not a person, but rather a vehicle: the GMC Hummer EV. GMC announced that it will be the main sponsor for the Chip Ganassi Racing Extreme E team. With the sponsorship, GMC gets to tweak the Extreme E Odyssey 21 race SUV to look more like the Hummer EV pickup and SUV that starts production late this year. The changes are subtle but effective, with the nose getting a full-width light-bar motif. Of course the race SUV is vastly more rounded than the road-going truck. It also features a standardized chassis from Spark Racing and a battery pack from Williams. The team is able to provide its own electric motor, though, which the series limits to 550 horsepower. The GMC Hummer EV race SUV will make its competition debut alongside several other pedigree teams at the first Extreme E event in Saudi Arabia this April. Three teams are operated by Formula One drivers including Sir Lewis Hamilton, Nico Rosberg and Jenson Button, the latter of whom will be driving. Andretti United will also field a team, a familiar competitor to Chip Ganassi in other racing series such as IndyCar. As for drivers, two World Rally Championship champions will compete: Carlos Sainz and nine-time consecutive champion Sebastien Loeb. The series will feature five races and with the way the competition is shaping up, they should be very interesting to watch. Related video:

No carbon fiber was harmed in the making of new 2015 GMC Sierra Carbon Edition

Carbon fiber is known for its properties of combining amazing strength with extremely low weight, and its frequent use in high performance vehicles gives the material a somewhat aggressive air. GMC is hoping to play on some of that mean reputation with its upcoming trio of Sierra Carbon Editions. However, despite their name, there's no actual carbon making its way onto these trucks (at least in the form of CF). Instead, the special edition is a graphics package with some extra equipment thrown in.
All three specials are based on the 2015 Sierra 1500 and can be ordered in two- or four-wheel drive configuration and with the standard 4.3-liter V6 or optional 5.3-liter V8. Things kick off with the standard Sierra Carbon Edition for $33,075, including destination, available only on the double cab body. Buyers get a black grille, carbon fiber decals on the hood and tailgate and body color trim for the door handles and mirror caps. The edition also adds keyless entry, a 110-volt outlet and LED cargo box lighting.
Buyers wanting just a touch more style can opt for the Carbon 20 Edition on the SLE double cab that gets the same exterior tweaks, plus 20-inch aluminum wheels, and retails for $38,275. Finally, there is the Carbon 22 Edition starting at $42,270 on the SLE in double- or crew cab models. It adds further black 22-inch wheels, tubular side steps, fog lights, keyless start, a universal home remote, dual-zone climate control and 110-volt outlet.