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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.

2021 GMC Canyon gets AT4 trim and a 'more upmarket' Denali

The AT4 train continues at GMC, with the 2021 Canyon AT4 climbing to altitude in Vail, Colorado, to announce its arrival. The off-road package, teased during the Sierra HD launch last year and already rolled out on the Sierra and Acadia, replaces the Canyon All Terrain trim. The rectangular grille goes away, the new rig picking up a larger, Sierra-like grille with a dark chrome surround and vertically-oriented fog lights. And because nothing says off-road badass like red recovery hooks, of course there's a pair peeking out from under the tweaked lower bumper. Otherwise, all the All Terrain kit carries over, like the tuned suspension with Advanced Hill Descent Control, transfer case skid plate, automatic locking rear differential, and 31-inch Goodyear Wrangler DuraTrac® tires on 17-inch aluminum wheels. Inside, the headrests are embroidered with AT4 logos, and Kalahari stitching is exclusive to this trim. GMC also announced a more polished Denali trim, without providing any photos. The coming pickup adopts a grille with a "more sculpted and layered pattern," plus five-inch chrome assist steps, and 20-inch Diamond Cut aluminum wheels that we'll assume come in a different pattern than the current 20-inch Diamond Cut aluminum wheels. The cabin goes upscale with open-pore ash wood trim and aluminum trim, a new Cocoa/Dark Atmosphere color theme, and unique stitching. Both the AT4 and Denali offer the same two engine choices. There's either the 3.6-liter V6 throwing out 308 horsepower and 275 pound-feet of torque, shifting through an eight-speed automatic, or the 2.8-liter Duramax diesel producing 181 hp and 369 lb-ft, shifting through a six-speed auto. The 2021 trucks will be available later this year, pricing to be announced closer to the on-sale date. The 2020 Canyon All Terrain starts at $37,695, the 2020 Canyon Denali starts at $41,595. Featured Gallery 2021 GMC Canyon AT4 View 11 Photos Related Gallery 2021 GMC Canyon AT4 View 11 Photos GMC Truck Luxury Off-Road Vehicles

GM offering factory-backed extended warranty for Chevys, GMCs, Buicks and Cadillacs

Cars are generally more reliable than ever before. When things do go wrong, every automaker offers some form of factory warranty (in most cases at least three years and 36,000 miles, though many extend even longer), providing peace of mind to new-car buyers that many faults will be fixed at no charge to the customer. Starting today, GM is offering a new optional plan that will extend the factory warranty on all new Chevy, GMC, Buick and Cadillac products. In the past, extended warranties have been offered as dealer add-ons, with all profits from these sales going to the dealership. GM's new program can be viewed as another nail in the the looming dealership-model coffin. According to Automotive News, some dealers aren't happy to see GM cut into their business like this, saying that it helps GM far more than it does dealers. GM says the new program will help keep customers in the GM family. Customers are also more likely to visit a GM service center rather than going to an independent repair shop. Currently, new Chevy and GMC vehicles come with three-year/36,000-mile warranties. Buicks and Cadillacs are covered for 4 years or 50,000 miles. The new program extends Chevy and GMC warranties to five years or 60,000 miles. Buick and Cadillac warranties extend to six years or 70,000 miles. GM, citing IHS Markit, says most owners keep new cars for about 6.8 years, so these warranties will cover most of the length of their ownership. The extended warranty will add between $1,000 and $2,000 to the price of a vehicle, and the additional cost can be rolled into the vehicle's purchase or lease price. Unlike many dealer extensions, the factory program covers the vehicle no matter who owns it. That should help increase the car's resale value if it's sold within the covered timeframe. GM says there's no deductible and no need to file a claim form when getting warranty repairs. Additionally, dealerships can continue to sell their own extended warranties or service contracts. Related Video: