1985 Gmc Sierra 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.

GM files for Z71 Trail Boss trademark

Try as they might to keep their plans a secret, automakers have their hands tipped through a variety of methods – be they through loose lips, spy shots or patent and trademark applications. That's how we know, in this instance, that General Motors is working on (or at least considering) an off-road machine wearing the name Z71 Trail Boss – the name which our compatriots at AutoGuide.com tell us that GM has registered for use on light-duty trucks. Now if that alphanumeric designator sounds familiar, it should. GM has long used it to designate the off-road packages on many of its body-on-frame trucks from Chevy and GMC. These days you can order a Z71 package on the Chevy Colorado, Silverado, Tahoe and Suburban and on the GMC Canyon, Sierra and Yukon. The package typically includes components like a beefed-up suspension bits, high-capacity air cleaner and underbody protection plates. The Trail Boss designator would seem to suggest something further reaching than a suspension package, though. Just what it would entail we don't know; minds immediately start running toward Chevy or GMC going after the Ford F-150 Raptor, but we'll likely be looking at something closer to the Trailhawk packages Jeep offers on the likes of the Renegade and Cherokee. Featured Gallery 2015 Chevrolet Tahoe Z71 View 16 Photos News Source: AutoGuide.comImage Credit: Chevrolet Chevrolet GM GMC Truck SUV Off-Road Vehicles patent trademark

2024 GMC Canyon AT4X AEV Edition pushes the limits even higher

The GMC Canyon AT4X is already a formidable off-road pickup truck, but now it’s getting even more capable with the addition of the 2024 GMC Canyon AT4X AEV Edition. If youÂ’re familiar with the Chevrolet Colorado ZR2 Bison, then by proxy youÂ’re familiar with GMCÂ’s version of it already. Like the bow-tie version of the pickup, the AT4X AEV Edition is lifted an additional 1.5 inches beyond the regular AT4X, giving it 12.2 inches of ground clearance, which is identical to the ZR2 Bison. You also get to work with a 38.2-degree approach, 26.0-degree departure, and 26.9-degree breakover angle. ItÂ’s fitted with AEV beadlock wheels wrapping 35-inch Goodyear Wrangler Territory mud-terrrain tires and uses hot-stamped boron steel skid plates for the radiator, steering gear, transmission, transfer case, fuel tank and rear differential. Appearance-wise, the AEV Edition sports a new front fascia with integrated fog lights and larger fender flares that facilitate the bigger tires. It uses AEV stamped-steel front and rear bumpers that include heavy-duty recover points, and the front bumper is compatible with a winch. The rear bumper (below) is particularly clever, as it has easily removable plastic corners that can be replaced with 10 millimeter-thick steel skid plates for a little extra protection on the trail. YouÂ’ll find an AEV in-bed mount for the spare tire, too, as the big 35-inch tire doesnÂ’t fit in the usual under-bed storage spot. GMC wasnÂ’t ready to provide hard numbers for payload or towing, but expect the Canyon AT4XÂ’s specs to go down in a similar manner as the ZR2 Bison that lost 230 pounds of payload capacity and 500 pounds of towing. And yes, the AEV Edition retains the AT4XÂ’s high-output four-cylidner that produces 310 horsepower and 430 pound-feet of torque. You get all the other AT4X goodies, too, including things like the Multimatic spool valve shocks and electronic-locking front and rear differentials. It also gets the sweet off-road launch control system that initially debuted on the Bison that can adjust power in real-time based on the traction available off-road. On the inside, the AEV Edition adds three standard auxiliary switches that you can hook up off-road or overlanding accessories to. The truck is also fitted with AEV-embroidered headrests and AEV all-weather floor liners. Pricing for the AT4X AEV Edition isnÂ’t available quite yet, but GMC says itÂ’s expected to be available for customer orders later this year.