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GM ending stop-sale order on heavy-duty trucks

General Motors responded to an inquiry from Autoblog regarding a stop-sale order on its full-size heavy-duty pickup trucks. Here's GM's official statement. GM is committed to building the highest quality products possible. We paused delivery on a small number of HD pickups with the 6.6 liter Duramax engine last week to finalize an investigation into a potential quality issue. The investigation has been completed and the stop sale will be lifted for the small number of vehicles at dealerships.Customers can be assured GM’s heavy duty pickups are covered by a 5 year/100,000 mile powertrain warranty. The original article continues below. General Motors has reportedly sent its Chevrolet and GMC dealers a stop-sale order that applies to some examples of the 2022 Silverado HD, the 2022 Silverado MD, and the 2022 Sierra HD. The units affected by the stop-sale order may develop an engine-related problem. Citing anonymous sources, website GM Authority wrote that the Duramax 6.6-liter turbodiesel V8 in the affected trucks can hydrolock, which means liquid could enter the cylinders and cause a substantial amount of damage. The report does not specify where the liquid would come from; hydrolocking can happen by driving through a deep puddle of water, for example, but a large amount of coolant can cause it as well. The publication adds that the stop-sale order was assigned internal reference number N222362910. It also notes that the trucks included in it can't be sold, delivered to buyers, traded with another dealer, sent to auction, or even used for demonstration purposes until further notice. Earlier in April 2022, GM Authority reported that General Motors planned to buy back an unspecified number of Silverado HD and Sierra HD trucks due to quality-related issues with the 6.6-liter V8. Details about the problems experienced by customers haven't been released; all we know is that each truck will be replaced, though the replacement may not have the same equipment due to the ongoing chip shortage. Related video:

Genovation Cars readies all-electric Corvette prototype

Chevy runs the full spectrum from some of the most environmentally friendly cars to the least. At one end are EVs like the Spark and Volt. At the other, performance models like the Camaro and Corvette. But one American company wants to bridge that divide. That company is Rockville, MD-based Genovation Cars, which reports that it is almost done building its prototype for an all-electric Corvette. Dubbed the Genovation Extreme Electric (or GXE for short), the prototype is based on a previous-generation 2006 Chevy Corvette Z06, but ditches its enormous 7.0-liter V8 for an array of inverters, batteries, and electric motors said to be good for over 700 horsepower and 600 pound-feet of torque. That promises to deliver a 0-60 time of about 3.0 seconds and a top speed in excess of 200 miles per hour. Those are supercar benchmarks for performance if we've ever seen them, and ought to leave even the top-spec Tesla Model S P85D in... well, not a cloud of smoke, but whatever the electric equivalent is, in a non-polluting cloud of that. The GXE is also supposed to be able to travel for 150 miles on a single charge, and handle well while it's at it with 50/50 front-rear weight distribution and a low center of gravity. Sorta like the Power Wheels 'Vette pictured above, then, but bigger and faster. Look for the GXE to debut at the Electric Vehicle Technology Expo this coming September in Michigan, after which Genovation says it will put the GXE to the test on the track to back up its performance claims. Genovation Cars Nearing Completion of High-Performance All-Electric Corvette, the GXE ROCKVILLE, Md.--(BUSINESS WIRE)--Genovation Cars is nearing the completion of a prototype high-performance all-electric Corvette called the Genovation Extreme Electric or GXE. Assembly of the GXE will be completed by the end of July, followed by a three-week testing phase. The GXE is based on a 2006 Z06 Corvette. Several contributors to the GXE effort have helped design and build record-breaking electric vehicles. They include an MIT electrical engineer and a mechanical engineer from Cosworth. "We are using state of the art inverters, batteries and electric motors that will produce in excess of 700-hp and 600 lb-ft of torque," said Genovation CEO Andrew Saul. "We expect the car to achieve 0-60 mph in around three seconds and have a top speed of over 200 mph.

Motor Trend puts Chevy Camaro Z28 and Porsche 911 GT3 Head 2 Head

Motor Trend admits, "This is an unfair comparison." But that doesn't make it any less fun to watch when they pit a Camaro Z/28 against the Porsche 911 GT3. The former has a 7.0-liter V8 with 505 horsepower and 481 pound-feet of torque shifted through a six-speed manual. The latter has a 3.8-liter flat-six with 475 hp and 324 lb-ft shifted through a seven-speed dual-clutch transmission. Yet those are only the little disparities – the big disparities are mass and money: the Camaro weighs 3,882 pounds and costs $76,150 as-tested, the Porsche weighs 3,267 pounds and costs $145,785. But they're both about hardcore performance, so MT takes them out on the street, to the drag strip, to the parking lot for figure eights and a skidpad test, and finally to Big Willow for Randy Pobst to give his professional assessment. Remember when a lotta people spent a lotta time debating Pirates vs. Ninjas? This is like that, only it's the "haul-ass good-time car" vs. the "track surgeon." Enjoy the debate in the video.