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GM resumes production of its 3.0-liter turbodiesel straight-six

General Motors temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine in August 2021 due to a supplier shortage. Reports claimed the pause would last through 2021, but the engine is already back in production. Enthusiast website GM Authority learned from sources inside General Motors that the straight-six is once again coming off the assembly line at the Flint Engine Plant in Flint, Michigan. There's no official word on precisely what the problem was linked to and whether it was related to the on-going chip shortage that's wreaking havoc across the automotive industry. All we know is that the pause lasted for about two weeks. Called LM2 internally, the six is available in Chevrolet's Tahoe, Suburban, and Silverado 1500 and in GMC's version of these trucks. It's also an option in the Cadillac Escalade. It develops 277 horsepower at 3,750 rpm and a V8-like 460 pound-feet of torque at 1,500 rpm in every application, and it allows these big behemoths to post surprising fuel economy numbers. Fitted to a rear-wheel-drive Tahoe, the Duramax returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make it more efficient than a Blazer. Demand for the diesel-powered trucks is relatively high. While the shortage undoubtedly took a toll on sales, the Duramax represented 8% of Suburban sales and 6% of Tahoe sales in May 2021. There are no other diesel-burning full-size SUVs available new so they have the market to themselves. On the truck side, Ram still makes the EcoDiesel available on some 1500 trims but Ford abandoned the segment. Related Video: Featured Gallery 2021 Chevrolet Tahoe RST View 24 Photos Chevrolet GMC Truck SUV Diesel Vehicles

NHTSA upgrades probe into 1.7 million GM vehicles over wiper failures

WASHINGTON — The U.S. National Highway Traffic Safety Administration (NHTSA) said Tuesday it is upgrading an investigation into 1.7 million General Motors vehicles for windshield wiper failures. The auto safety agency opened the probe in November 2018 to see if GM needed to expand a 2016 recall of 2013 model year Chevrolet Equinox and GMC Terrain SUVs to cover additional vehicles. The engineering analysis probe covers 2010-2012 and 2014-2016 Equinox and Terrain vehicles. NHTSA could demand a recall after it completes the probe. NHTSA said it has reviewed 1,900 complaints and reports related to the issue in the 1.7 million vehicles. NHTSA said it has seen elevated failure rates in the 1.7 million vehicles, even though GM said the recalled vehicles have "double the warranty rate and five times the complaint rate." GM said it will "fully cooperate to support their investigation. We do not believe these windshield washer systems are defective." The wiper failures that prompted the 2016 recall were attributed to water and debris intrusion into the windshield wiper assembly ball joints, leading to excessive wear and eventual detachment of the ball joint. GM said it was installing an improved windshield wiper motor and transmission assembly and relocating a drain hole at the base of the windshield. Related Video:

2024 GMC Canyon AT4X AEV teased on 35-inch tires

Last month, Chevrolet Performance teased the 2024 Colorado ZR2 Bison, which will be the ultimate hardcore off-road variant for that model developed in collaboration with American Expeditionary Vehicles (AEV). Since that camouflaged preview appeared, we've welcomed debuts of the competition, the 2024 Ford Ranger Raptor and 2024 Toyota Tacoma TRD Pro. Bookending a solid month of 4x4 delights, GMC teased the coming 2024 Canyon AT4X AEV. We can look at this as the GMC version of the Colorado ZR2 Bison, the Canyon's new-for-2024 AT4X trim given an additional boost in spec and capability. This isn't the truck's first flirt with the public. During media drives for the 2024 Sierra HD AT4X, one of the new heavy duty rigs showed up to the site pulling a trailer bearing a covered pickup. The mid-size form factor, 35-inch tires, and appearance at a GMC event were clues enough to the pickup's identity.  The official preview is proof of what we've been expecting. The revised front fascia wears a high-clearance bumper. Don't expect that winch to be included; the red hook in the tease is a digital add-on. You can expect the winch opening, boron steel underbody skid plating, and Multimatic dampers. The standard AT4X got a three-inch lift over the non-hardcore Canyon variants, in part thanks to being fitted with 33-inch tires. The 35-inch Goodyear Wrangler Territory MT 315/70 17 tires on the AT4X AEV are thought to help provide 11 inches of ground clearance. Beefier wishbones and hydraulic bump stops help protect owners who want to test limits. Reports by folks who walked around the covered truck predict a set of beadlock-capable AEV Salta wheels like the kind sold with the full-size Sierra AT4X AEV Edition. The cover couldn't hide the sport rack in the bed nor the bed-mounted spare tire carrier. Those, like the winch, are likely options that add to the price. Don't be surprised if engine output is unchanged. The 2.7-liter H.O. turbocharged four-cylinder makes 310 horsepower and 430-pound feet of torque. We'll never complain about more, but that's plenty for a truck envisioned as a low-speed obstacle crosser.  All GMC is saying for now is, "An even more off-road capable Canyon is coming." It debuts on July 6. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.