2022 Gmc Acadia Denali on 2040-cars

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GM faces possible class action lawsuit over 8-speed transmission

General Motors has been hit with a class-action lawsuit from owners who allege the eight-speed automatic transmission found in several rear-wheel-drive Chevrolet, Cadillac and GMC models between the 2015 and 2019 model years has a defect that causes the vehicles to hesitate and jerk when accelerating or slowing down. The lawsuit was posted to ClassAction.org and spotted by GM Authority. Problems with GM's Hydra-Matic 8L90 and 8L45 transmissions have been well-documented on Internet forums and via complaints filed with the National Highway Traffic Safety Administration, with many reporting damage to their vehicles. The lawsuit was first filed in December in U.S. District Court for the Southern District of Florida but appears to have been transferred recently to New York. Autoblog sought comment from Theodore Leopold, the lead attorney for the plaintiffs. "These transmissions have a common defect," the complaint reads. "Drivers attempting to accelerate or decelerate their cars feel a hesitation, followed by a significant shake, shudder, jerk, clunk, or 'hard shift' when the vehicle's automatic transmission changes gears." The problem also occurs when the vehicles accelerate in a single gear, without shifting, the plaintiffs allege. "Drivers have reported that the shift is sometimes so violent, they feel as though they have been hit by another vehicle." The problem is believed to center on the transmission, torque converter or both. The complaint says it causes undue friction, causing hydraulic systems and gears to function improperly and sometimes leaves metal shavings throughout the transmission, leading to costly repairs and replacement of parts or the entire transmission. It says GM has known about the problems since shortly after it introduced the transmissions, and has issued 13 technical service bulletins, none of which have resolved the problem. GM declined to comment on the lawsuit. The plaintiffs say GM should have warned consumers about the issues and covered repairs under each vehicle's three-year/36,000-mile bumper-to-bumper warranty. They're seeking statewide classes in at least six states: California, Florida, Illinois, New York, Oklahoma and Texas.

GMC Canyon Denali Interior Review: THE luxury midsize truck

Over the past couple of years, GMC has been getting serious about being more than just a rebrand of Chevy trucks and SUVs. The same goes for the luxury Denali line. Among the beneficiaries of this push for differentiation is the latest Canyon. On top of only being available with the wide-track layout and the most powerful engines, it gets a Denali trim that is unequivocally the most luxurious midsize truck in the segment. The GMC Canyon Denali could even be described as a luxury midsize truck, of which there are no others. And it all comes down to what GMC has done with the interior. Open the door, and the upgrades are immediately obvious. There's leather everywhere. It's on the dash, the door panels, center console and doors. And it has nice details with the perforation and quilted stitching. The seatbacks get embroidered Denali logos and contrasting leather panels, too. The feel is more rugged than supple, but it is a truck after all, and the materials feel like they'll wear nicely.  Then you notice the wood trim. The real wood trim. It's subtle, just adorning a strip along the top of the dash and the front door panels, but the light brown color stands out against the black leather and plastic elsewhere. It's got a natural, open-pore finish that highlights the material, and the strip in the dash gets extra laser-cut details. The branding consisting of DENALI, some stylish strakes and the coordinates of Denali, the mountain, are crisp and clear. Throw in plenty of shiny chrome, and the same quality-feeling buttons and knobs (the knurling details on the knobs are particularly nice), and just on trimmings alone, it's obvious the Denali is the most plush little truck. The seats themselves are solid, though not particularly exceptional. The front seats are a bit flat, but they're also very roomy. On the Denali, the driver's seat has eight-way power adjustability with memory, and the passenger has six-way power adjustability. Heating and ventilation are included, too. Leg, head and shoulder room are also all excellent up front. The rear seat, like the rest of the segment, has enough room for adults, though legroom is a tad tight, with knees likely brushing the front seat backs. The seat bases in the rear are split with storage underneath, although it's not particularly useful. Besides its meager volume and awkward shape, much of it is taken up with the jack.

2022 GMC Sierra Super Cruise First Drive | Now with trailering and automatic lane-changing

Although the updated late-model year 2022 GMC Sierra is still a little ways off (In fact, it hasn't even been revealed), we've had an opportunity to try one of its headlining features: Super Cruise. But it's not quite the Super Cruise you know from the current Cadillac line. The new Sierra will be getting a newer version with two features: the ability to execute lane changes and passes automatically, and the ability to operate with a trailer. We tried the system at GM's proving grounds in Milford, Mich., and our test vehicles were 2022 Sierra prototypes. Though the trucks themselves are early examples with features not finalized, GMC representatives said the Super Cruise system is pretty much finished. The system uses close and long-range radar sensors at the front and a new set of radar sensors at the back, plus the truck's various cameras. It also utilizes the mapping data that GM has accumulated for the system to ensure it operates on approved roads and has detailed information about where the car is. Now, the first new feature enabled by the updated Super Cruise is the automatic lane-change system. The current system can change lanes on its own, but it must be prompted by a press of the turn signal. That feature remains intact, but now, if you approach a slower vehicle on a multi-lane highway, Super Cruise can check the lane next to you to see if it's safe to merge, change lanes, and then return to the original lane once the slow-moving vehicle has been passed. This is where those rear radar sensors come in. We tried it three times on GM's big banked oval course, and it did it impressively smoothly. It was able to make the decision proactively, too, making the decision to change a good distance before we were on top of the slow moving car. Oh, and of course, because this is Super Cruise, it all happened without us having to touch the wheel. Our automatic lane change test was followed by trying Super Cruise with a trailer. Now, it's important to note that the automatic lane-changing functionality won't work with a trailer. This is because that function depends on a set of radar systems at the back of the truck that are blocked by a trailer. Apart from that, the rest of Super Cruise's functions still work just fine. To make this possible (and safe), the system is able to estimate the weight of the trailer and adjust following distance accordingly, allowing it to safely slow down as needed.