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GM recalls 3.8 million vehicles in North America due to braking issue

WASHINGTON — General Motors Co said Wednesday it was recalling 3.46 million U.S. pickup trucks and SUVs to address a vacuum pump issue that could make braking more difficult and that has been linked to 113 accidents and 13 injuries. The recall covers 2014-2018 model year vehicles, including some Cadillac Escalade, Chevrolet Silverado, Chevrolet Tahoe, GMC Sierra, Chevrolet Suburban and GMC Yukon vehicles. In late June, GM recalled 310,000 vehicles in Canada for the same issue. GM did not immediately explain why the Canadian recall occurred more than two months before it called back the vehicles in the United States. The recall was triggered because the amount of vacuum created by the vacuum pump may decrease over time, GM told the National Highway Traffic Safety Administration (NHTSA) in documents posted on Wednesday. The NHTSA opened a preliminary investigation into the issue last November, and said it had reports of nine related crashes and two injuries. It provided GM in July with additional field reports that prompted the automaker to open an investigation. GM said it could affect braking in "rare circumstances." The NHTSA said in a statement the "vehicles may experience brake boost failure, which would require increased brake pedal effort, leading to a hard brake pedal feel, and potentially increased stopping distance." GM said dealers will reprogram the electronic brake control module to improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted. GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen. GM told NHTSA that prior model years used a different brake assist system design, and vehicles manufactured after 2018 were not equipped with the affected pump design. Separately, GM said on Wednesday it is recalling 270,000 additional U.S. vehicles in three smaller recalls, including 177,000 2018 Chevrolet Malibu cars with 1.5L turbo engines because an error in the engine control module software may result in the fuel injectors being disabled.

GMC Hummer EVs 'sold out for two years or more'

At the end of March this year, GMC said it had 65,000 reservations for the Hummer EV pickup and SUV. At the time, brand chief Duncan Aldred said, "Production’s actually slightly ahead of plan and weÂ’re putting things in place now to actually expedite that as well, so we can deliver these reservations quicker than we originally thought. WeÂ’re seeing momentum building," adding that "it still means a reservation now probably means delivering in '24." By the time of the 2024 GMC Sierra EV Denali Edition 1 reveal just a bit ago, that reservation number had climbed to 90,000. GMC shut down the Hummer reservations line a month ago. GM Authority reports that when GMC chief Duncan Aldred spoke at a media briefing ahead of the Sierra EV reveal, he said the Hummer is "sold out for two years or more."   Notice, the word "probably" has been replaced by the phrase "or more" in the production vocabulary. That development likely takes into account what's happened since March at GM's Factory Zero, where the automaker currently builds the Hummer. That site, along with the new Orion Township Assembly Plant, will soon build the Chevrolet Silverado EV, GMC Sierra EV and Cruise Origin autonomous vehicle. In a memo from the beginning of the year, GM said a $6.6 billion investment in EV production capability will ultimately allow 600,000 electric pickups to come off lines every year. That's at least a couple of years away, though. At the beginning of October, GM said it wanted to bump production of the EVs on sale now, which includes the Chevrolet Bolt, to 70,000 vehicles in 2023. Back to the Hummer, GMC increased September Hummer production to 700 units for the month. That was a huge bump over the monthly average in the nine months up to September, the production totaling 2,750 units for the first three quarters, yet well behind what the brand would like. And Factory Zero will shut down for a few weeks in November for upgrades to produce the additional vehicles. All of this assumes the supplies of chips and raw minerals for batteries, industrial supplies and industrial transport don't suffer another hiccup. If there's any good news buried in all this, it's that 95% of Hummer reservation holders were converting to paid orders, an absurdly positive number. Based on what we've seen so far, GM's got some good looking EVs on the way. Let's cross our fingers that the company can build them quicker. Related video: This content is hosted by a third party.

Leak reveals GM's 2017 heavy duty diesel trucks to get 910 lb-ft of torque [UPDATE]

UPDATE: Chevrolet officially announced specs for the 2017 Silverado HD and the rumors were true. The truck's new Duramax 6.6-liter turbo-diesel V8 puts out 445 horsepower and 910 pound-feet of torque. Chevrolet says the new motor produces 19 percent more torque and 12 percent more horsepower, while producing 35 percent fewer emissions. Overall, the new engine is a big improvement over the current motor, which generates 397 horsepower and 765 pound-feet of torque. According to Truck Trend, GM's newest heavy duty pickup trucks will pick up quite a bit more power and torque. The publication spotted a recent GM Powertrain ordering catalog that had the engine specs for the 2017 model year and managed to get some screenshots before the catalog was taken down, and they can be viewed here. The screenshots revealed that the 6.6-liter turbodiesel V8 powering the Silverado and Sierra heavy duty models will boast 445 horsepower and 910 lb-ft of torque. This is a substantial gain over the current models' 397 horsepower and 765 lb-ft of torque, and as Truck Trend points out, it exceeds the Ford Super Duty line's horsepower output of 440, but comes short of the 925 lb-ft rating. Truck Trend credits part of this output gain to the new intake system GM will introduce on the 2017 heavy duties. The intake gets 60 percent of its air from a scoop on the hood, with the other 40 percent coming from behind one of the front fenders. GM doesn't reveal horsepower figures in the press release about the scoop, but it does say the cooler air helps with maintaining the engine's output, and that the scoop does produce a ram-air affect, providing more air at speed. As we know, more air plus more fuel equals more power, but there's likely more to the power increase in this engine than only the intake. Related Video: News Source: Truck Trend via MSN Chevrolet GM GMC Truck Diesel Vehicles