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GM recalls select Tahoes, Yukons, Escalades for rear driveshaft issue

GM is recalling a number of its full-size SUVs due to an issue with the rear driveshaft assembly that could ultimately result in driveshaft failure. The actual number of total vehicles involved in the recall is small at just 1,789, but it’s spread out across the entire 2021 model year full-size GM vehicle lineup. That means a small number of every model is being recalled, including the Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL and the Cadillac Escalade and Escalade ESV. GM traced the issue back to certain driveshaft assemblies with ball bearings that were not properly heat treated. If theyÂ’re not properly heat treated, GM says that the balls may deform over time, causing noise and vibration. Continue to drive in this condition, and GM says the affected joint in the driveshaft assembly could seize, causing loss of drive power. However, the problem wonÂ’t present itself all at once, as GM says there will be a gradual increase of noises and vibrations before total failure. For those few owners with affected vehicles, GM says that it will replace the left and right rear driveshaft assemblies with properly-built units. Per usual with recalls, this will be done at your local dealership at no cost to the owner. If you have one of the recalled SUVs, expect to be notified mid-March. Related video:

GMC Sierra EV Denali Edition 1 teased before tonight's debut

GMC says its Sierra EV Denali Edition 1 battery-electric pickup is "Built to tower above everything you thought an electric truck could be. That’s why itÂ’s the only EV that deserves the name Denali." We will know what the marketing speak means tomorrow (Thursday), when GM's third electric pickup in a year debuts at 5 p.m. Eastern. GMC teased the face of the Ultium-powered Sierra Denali nearly a year ago with an animated rendering. This second teaser on the eve of the debut gives us a better feel for what to expect. The front fascia advertises the product with illuminated GMC lettering at the center of a grille panel defined by an illuminated border. Upside down L-shaped LED lights frame three LED charging status bars. Below those at the bumper edges are what look like four fog lights, two round units above two squared oval units. In back, a glimpse of taillight reminds one of the Hummer EV's spendy rear lights, a Denali badge informing tailgaters what kind of truck they're following. A panoramic glass panel takes up just about the entire roof, save for some sheetmetal at the back where the shark fin antenna rests. Under that roof, one of the seating options will be a ventilated, quilted fabric with "Denali" embroidered in the headrest.  All the other intel must wait another 24 hours. This truck's Chevrolet Silverado EV sibling has been pitched as pricing between $40,000 and $105,000. We've been told the Sierra EV will only come in Denali trim, so expect the feature set and pricing to align more with the Hummer EV, from close to $100,000 once all trims are rolled out to sums well over $100,000. The furnishings could set a new benchmark in glitz for GMC, brand VP Duncan Aldred saying, "We now have an opportunity to evolve SierraÂ’s capabilities and technologies, as afforded by transitioning to an all-electric propulsion while also elevating the luxurious design and comfort associated with Denali." The playbook established so far leads us to believe the Ultium platform will provide a 200-kWh battery and an estimated range of 400 miles, and an output of something like the 664 horsepower and 780 pound-feet of torque in the top Silverado EV trim. Or this limited Edition 1 trim could split the power gap between the Silverado EV and the 1,000-hp Hummer EV.  Reservations open after the debut.

2017 GMC Acadia adds four-cylinder and All Terrain model

General Motors has officially started the process of updating its long-in-the-tooth fullsize CUVs by unveiling the second-generation GMC Acadia at the 2016 Detroit Auto Show. While the Acadia is 700 pounds lighter, it's also shorter and narrower, which means it's not quite the people mover it used to be. You'll no longer be able to haul eight passengers, although there will still be five-, six-, and seven-passenger offerings. While families might not be thrilled with the loss of a seat, the lighter weight is a net win. Not only will the V6 model feel more powerful and efficient – in addition to the lower curb weight, there's a new, 310-horsepower engine – but it will also likely be more economical. GM estimates the front-drive V6 will return 25 miles per gallon on the freeway, compared to 24 mpg for the current front driver, but city fuel economy remains pegged at 17 mpg. In a move we're not entirely sold on, though, the Acadia will also adopt a four-cylinder engine, and no, it's not GM's highly regarded 2.0-liter turbo. Instead, you'll be able to order this 4,000-pound CUV with a 2.5-liter, 194-horsepower four-cylinder. What it won't be able to provide in straight-line speed, it will make up for with fuel economy. GM is wagering the front-drive, four-cylinder Acadia will net 22 mpg in the city and 28 on the highway. Both engines are paired with a HydraMatic 6T75 six-speed automatic. A new All Terrain model is said to be optimized for wet, snowy and icy conditions, and its drive mode selector removes the Off Road selection in favor of All Terrain. We have live images of both the new Acadia Denali, as well as the new-for-2017 All Terrain model, direct from the floor of the 2016 Detroit Auto Show. There's also a video of the full GMC press conference with reactions from our editors. Check them out. GMC Introduces All-New 2017 Acadia * 700-lb. lighter, more efficient crossover aimed at heart of midsize segment * Expanded range of available active safety features, including Front Pedestrian Braking and Surround Vision Camera * New powertrains include a 2.5L I-4, offering a GM-est. 28 mpg hwy, and an available est. 310-hp 3.6L V-6 * Acadia Denali with new, exclusive Continuously Variable Ride Control * New Acadia All Terrain with an advanced AWD system with Active Twin Clutch * On sale this spring DETROIT, Tuesday, Jan.