1981 Gmc Sierra 1500/chevrolet K20 4x4 on 2040-cars

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Supercharged 2015 GMC Yukon Denali sounds evil, runs 0-60 in 4.5 seconds

Speeding along in a sports car is undoubtedly a ton of fun, but some owners need the ability to carry a lot of people and their stuff and don't want to sacrifice the ability to put the power down. The tuners over at Hennessey have that demographic covered with their growling, supercharged power kits for the GMC Yukon Denali. The upgrades come in three forms for the SUV's 6.2-liter V8: HPE550 with 557 horsepower, HPE600 with 605 hp and HPE650 with 665 hp. This video showcases the full-bore version, and this Denali can definitely hustle in a straight line. The power bump comes courtesy of a 2.9-liter supercharger, intercooler and high-flow cylinder heads to add over 200 horsepower compared to stock, and the final result is a bellowing SUV that rears up off he line to throw the driver back into the seat. The sprint to 60 miles per hour lasts just 4.5 seconds. Check out this hasty hauler in action in the video above.

GM's MPG overstatement could affect 2 million vehicles

Late last week, GM admitted that three of its large SUVs fuel economy window stickers did not match their actual efficiency ratings, and so the vehicles couldn't be sold. The stickers on the 2016 Chevy Traverse, GMC Acadia, and Buick Enclave said their ratings were one to two miles per gallon better than they should have been. Officially, the number of affected vehicles sits at about 60,000. But Consumer Reports makes a good point: what's up with all of the previous model year SUVs that are basically the same vehicle? To wit: the 2016 model year vehicles are not substantially different than the 2015 or the 2014, or even going all the way back to 2007. On the EPA's fuel economy website, all of these older models will "have better stated fuel economy numbers than the new vehicles in GM's dealerships," Consumer Reports noted. CR's best point, and the one that makes the 60,000 number potentially grow to 2 million if all of the vehicles built on this platform are affected, is that "[i]t seems unlikely that the company would change the powertrain on these carryover models so late in their model cycles in a way that would cause a dramatic, negative impact on fuel economy." GM says that earlier model year SUVs are not affected and the EPA did not respond to CR's question about the potential for more discrepancies. We've seen automakers reverse course before, so if GM has to come out with a mea culpa soon, don't be surprised. GM is rushing corrected stickers to dealers so that the SUVs can be sold again, but a fix for the already-sold vehicles could be trickier to solve. Related Video: Related Gallery 2013 GMC Acadia View 16 Photos News Source: Consumer Reports Government/Legal Green Buick Chevrolet GMC Fuel Efficiency mpg gmc acadia chevy traverse

GMC introduces Canyon Nightfall Edition for the steathly and stylish

It may be just now arriving at dealers, but the 2015 GMC Canyon has just received its very first special edition trim, although the stealthy Nightfall Edition is, in the greater scheme of aesthetic upgrades, pretty basic. GMC has blacked out the truck's grille and side steps, added a spray-in bedliner as standard, fitted new 18-inch "Dark Argent" wheels with black inserts, a polished exhaust tip, remote start and automatic climate control. Naturally, the Nightfall Edition is only available with Onyx Black paint. Customers interested in the blacked-out pickup will need to choose between two-wheel drive and four-wheel drive, although they'll be freed the burden of picking a trim level or body style, as the Nightfall is limited to the mid-grade SLE with the four-door crew cab arrangement. "The new Canyon Nightfall Edition expands the Canyon lineup and gives style-conscious customers another choice," GMC's vice president of sales and marketing, Duncan Aldred, said in a statement. "Importantly, customers get the great looks of the Canyon Nightfall Edition and its unique content at a greater value than ordering the features separately." GMC has not released any information about the price of the Nightfall Edition, or when it will arrive in dealerships. Scroll down for the full press release announcing the newest member of the Canyon family. GMC Introduces 2015 Canyon Nightfall Edition Special edition model offers sleek, shadowy appearance 2015-01-08 DETROIT – GMC today introduced the 2015 Canyon Nightfall Edition – a stylized, blacked-out edition of the brand's all-new premium midsize truck that blends a dramatic appearance with popular features and accessories. The Canyon Nightfall Edition is offered on SLE crew cab models, either 2WD or 4WD, in Onyx Black and will be available in the first quarter of 2015. In addition to standard equipment on the SLE, the Canyon Nightfall Edition includes: Unique black grille Black assist steps Factory spray-in bedliner 18-inch multi-spoke aluminum wheels with Dark Argent painted inserts Polished exhaust tip Automatic climate control Remote start "The new Canyon Nightfall Edition expands the Canyon lineup and gives style-conscious customers another choice," said Duncan Aldred, vice president of GMC Sales and Marketing.