Gmc Sierra 3500 Denali on 2040-cars

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GMC introduces off-road performance package for Sierra AT4

GMC is giving its off-road-focused Sierra AT4 pickup even more performance with some factory-installed upgrades. The package is called the AT4 Off-Road Performance Package. With it you'll get the 6.2-liter V8 engine upgrade, cat-back performance exhaust system, performance air intake and 18-inch aluminum wheels shod in Goodyear Wrangler DuraTrac tires. The upgraded performance comes in the form of extra power. Thanks to the bolt-ons, you gain 15 horsepower and 9 pound-feet of torque over the 6.2-liter in stock form. This increases output to 435 horsepower and 469 pound-feet of torque — not too shabby. This package is priced at $4,940, and available for order now. That's a hefty price for what amounts to some minimal bolt-on modifications you could easily do yourself. However, buying it through GM means you get to keep your warranty in place. The Sierra AT4 already has more off-road features than a normal Sierra 1500. You're getting a two-inch lift, four-wheel drive with two-speed transfer case, locking rear differentials, skid plates, Rancho off-road shocks and hill descent control. Both the wheels and tires are available as options already, but this package just bunches related stuff together. It'll be up to you to decide if an exhaust and intake are worth the extra dough. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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.

2013 GMC Acadia priced from $34,875*

For those who are interested in the reworked 2013 GMC Acadia, we now know how much you can look forward to forking over. Base MSRP for the 2013 version of the full-size, three-row crossover has been set at $34,875 (*not including a $825 destination charge). If you are interested in the range-topping Denali trim, be prepared to pay $46,770.
The 2013 Acadia will come standard with a backup camera, leather-wrapped steering wheel, USB port and recycled visuals from the now-dead Saturn Outlook.
Upping to the Denali trim gets you a head-up display, blind spot monitoring system and GMC's new Rear Cross Traffic Alert system. According to GMC, most trims will also receive IntelliLink connectivity as standard equipment. The Acadia will also get the industry's first front-center airbag, an innovation it shares with other Lambda-based crossovers like the refreshed 2013 Buick Enclave. The idea behind the new tube-shaped airbag is that it can provide a buffer between driver and front seat passenger in the event of an impact, or better hold the driver in place if he or she is alone.