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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.

Cadillac considering ultra-luxe, $100k+ Escalade

The Cadillac Escalade has pushed incrementally up-market over the years. From its humble Chevy/GMC truck underpinnings, the latest Escalade starts at $72,970 and tops out at $96,940. But according to the latest reports, Cadillac is weighing an even more upscale version. Though the exact nature of the upgrades that would push the Escalade further up-market remain unknown – and perhaps undecided at this point – the impetus for such a move is crystal clear. European luxury SUVs keep getting more and more expensive, both from established players and new challengers. Bentley just launched the Bentayga, and other luxury marques like Rolls-Royce, Aston Martin, Jaguar, Maserati, and Lamborghini are all getting into the game. All the while manufacturers like Land Rover and Mercedes-Benz keep rolling out ever more expensive offerings, like the Range Rover Autobiography and anticipating forthcoming Maybach sport-ute. To challenge those European imports with their astronomic price tags, Cadillac could go with an even higher trim level than its existing Platinum spec – or it could go with a more powerful, performance-oriented Escalade V or Vsport. Getting that big a vehicle to hustle would require a lot of power, but then General Motors has never been one to shy away from slotting a bigger engine into its vehicles. One thing's for certain though, and that's that Cadillac isn't quite done with pushing the Escalade higher up the market.

GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.