2008 Gmc Sierra 3500 Hd Slt Crew Cab Pickup 4-door 6.6l on 2040-cars

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2020 GMC Sierra HD offers loads of tech

The 2020 GMC Sierra HD has finally been revealed, and it's a heck of a lot more subtle than the Silverado HD. Whereas the Chevy went with a wildly exaggerated version of the split grille and headlights the truck is known for, the Sierra simply builds on the 1500 model's design with an expanded grille that doesn't appear to be as tall or wide as the Chevy's. That's not to say it looks unimpressive, though. It's still got a massive fascia, it's just not as extreme as the one with a bowtie on it. With the Sierra's unveiling, we get more details about the powertrains available on the heavy duty GM trucks. The 6.6-liter turbocharged Duramax V8 makes 445 horsepower and 910 pound-feet of torque. That's the exact same output as the engine in the old models. But this time, the engine will be mated to an Allison-branded heavy duty version of the GM 10-speed transmission. A gas engine will also be available, but GMC hasn't revealed details on it yet. The new Sierra boasts a range of new features, some that are unique to it, and some shared with the Silverado. A shared feature is the new steps in the bed sides that are standard on all Sierra HD models. Unique to the brand is the MultiPro tailgate with fancy drop-out step. This tailgate will be available on all trims, and it's standard starting with the mid-level SLT. There are some useful visibility features being shown on the new Sierra, too, such as an available trailer camera system with 15 possible viewpoints, and it can virtually show the rear view on the screen as if there wasn't a trailer in the way. GM's rear-view mirror screen also makes an appearance. An AT4 off-road trim will be available on the new Sierra HD. It has slightly different styling with dark grilles and trim. Off-road upgrades include reworked springs and shocks, skid plates, standard all-terrain tires and a locking rear differential. Pricing has not yet been announced, but the truck goes on sale this summer. Details on prices as well as further specifications will likely be announced near the on-sale date. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Fullsize GM SUVs have a problem that's making owners sick

Some fullsize SUV owners are getting sick, thanks to a buffeting and vibration problem in 2015 model year examples of the Chevy Tahoe and Suburban, Cadillac Escalade, and GMC Yukon. According to owners' complaints to the National Highway Traffic Safety Administration, the issue can vary from an annoying vibration inside the cabin to an experience so severe that it leads to dizziness and headaches. General Motors is aware of the complaints, but the fix isn't so simple. According to spokesperson Tom Wilkinson to Autoblog, the company "has been tracking this issue for a while." The problem has a fairly low incidence rate, but when it does occur the issue can be "uncomfortable and annoying for owners." There's no precise cause for the issue, Wilkinson claims, and in some cases, simply balancing the tires or changing the door seals can make it go away. However, not all of the fixes are so simple. AutoGuide dug deep into the problem and discovered a GM preliminary information bulletin that advised dealers to remove the headliner and to check the roof's bonds to the bows that go across the vehicle. However, that document included a note that the solution might not entirely eliminate things. According to AutoGuide, adding Dynamat insulation to the roof sometimes helped the problem. A GM spokesperson also told AutoGuide the company fixed the problem at the end of the 2015 model year, and didn't go into any more detail. This roof issue seems linked to some of the worst droning in these SUVs. According to one complaint from a 2015 Suburban owner to NHTSA: "Roof will not remain attached to the roof bows. This causes the buffeting similar to a window being down when all are up. The results span from annoying to painful." A 2015 Yukon owner claims to have another alleged cause for the problem in a NHTSA complaint from February 2015. This person brought their SUV to the dealer seven times over the course of four weeks for vibrations. The dealer replaced the driveshaft, suspension components, and more, but nothing worked. According to an engineer to the service adviser: "In an effort to prevent roll overs, they designed the frame and body mounts too stiff. There are 40 engineers working on issues, they have no solutions that work across the board." Wilkinson told Autoblog that GM is working with customers on an individual basis to rectify things. Since these are newer vehicles, dealers should also fix the problem under warranty.

GMC adds stylish new Elevation model to 2019 Sierra lineup

GMC has announced a new style-forward model for its forthcoming 2019 Sierra pickup. It's called the Elevation and it will be based off the Sierra double-cab model with a new turbocharged engine, aimed at buyers who want a little panache with their rugged capability. GMC marketing director Rich Latek says the Elevation "conveys a youthful, athletic presence" with the pickup's chiseled fenders and assertive, upright hood. As such, the Elevation gets body-color-matching door handles, bumpers and grille surround, plus black exterior accents like the grille insert, tow hooks, side window trim and standard 20-inch aluminum wheels. Headlights, tail lights and fog lamps will be given the LED treatment, with the former getting the new C-shaped designs that have already been unveiled on other trim levels. It will be offered in two- or four-wheel-drive configurations, with nearly 3 inches more leg room than the current model. A traction select system will use a dial that drivers can set to preset driving modes to adjust transmission shift points, throttle mapping and other systems. An X31 Off Road package will be offered and boasts tuned suspension, a locking rear differential, protective skidplates, dual exhaust and other features. Also available will be a ProGrade Trailering System that includes a Trailering App to help connect and tow a trailer, on top of additional tie-down points, enhanced cargo lighting and other perks for hauling camping or recreational gear. Inside will be a standard 8-inch infotainment system compatible with Android Auto and Apple CarPlay with a six-speaker audio system, plus USB Type A and Type C ports for charging mobile devices. As for the powertrain, it will come with an all-new 2.7-liter turbo inline-four engine that makes 310 horsepower and 348 pound-feet of torque paired with an eight-speed automatic transmission. Also available is a 5.3-liter V8 that uses a new efficient fuel management system that enables it to operate on anywhere from one to all eight cylinders, depending on demand. In early 2019, a new 3.0-liter turbo-diesel inline-six will also be offered, mated to a 10-speed automatic. The Elevation adds to Sierra models like the SLT and Denali that GMC unveiled earlier this year. The company has shaved as much as 360 pounds off the new 2019 model — plus more from the Denali, thanks to carbon fiber in the bed box — so fuel economy should see a boost, too. It goes on sale in the fall.