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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 Terrain headlight recall fix is a sticker

This GMC Terrain recall over a headlight issue has gone from fascinating to absurd. It started when GMC discovered the headlights on the 2010-2017 Terrain were out of compliance with Federal Motor Vehicle Safety Standards (FMVSS). A pinpoint of low-beam light was being reflected off the high-beam reflector. This bounced a tiny sliver of bright light up into the trees and the sky beside the road, not into oncoming traffic. GMC did the right thing, reporting the noncompliance to the National Highway Traffic Safety Administration. Because the sliver of light was coming from the low beams and was four times brighter than the maximum allowable low beam brightness, the NHTSA told GMC to recall 740,581 units of the SUV. GMC asked for an exemption, admitting the bright spot could cause glare while noting the errant beam didn't affect other road users. The automaker hadn't received any complaints, only a comment from one owner saying the lights put a bright spot in the trees on the other side of the road. The NHTSA denied the request. GMC began notifying owners in April that they'd need to come in for a fix once a fix had been developed. That's the fascinating part. The absurd part, which Tire Meets Road uncovered, is that the fix is a "Headlamp Applique Kit." Which is a piece of frosted tape applied to the outside of the headlight that lets low-beam light through and tamps down any potential glare from the caroming beam. Notice that the parallelogram of frosted tape matches the L-shaped frosted area along the inside of the headlight housing. That portion was already a feature of the lamp, as can be seen in our 2016 Terrain Denali Quick Spin. The repair needs a trip to the dealer for a tech to place a positioning template over the headlight and put the applique kit in the proper spot. GM's instruction kit says the whole thing should take 0.2 of an hour, or 12 minutes—about the time it it would take to get checked into and out of the dealership service department. Owners aren't impressed, some calling the fix unnecessary and ridiculous, and the tape should make it clear that GMC feels the same way. Some owners have said they're going to skip the recall. Those drivers will find that just as GMC couldn't escape the legal ramifications, neither can they. Local motor vehicle bureaus keep track of recall compliance.

GM trucks get hybrid versions, but you'll probably never see one

A few years ago, General Motors sold hybrid versions of its Chevy Silverado and GMC Sierra pickups. They weren't very good, using GM's old two-mode hybrid system that resulted in only negligible fuel economy gains. But GM's trying again, launching eAssist models of the 2016 Silverado and Sierra that are said to offer 2-mpg improvements in city, highway, and combined fuel economy ratings. Problem is, you probably won't be able to get one. Only 700 eAssist trucks will be made for the 2016 model year – 500 Silverados and 200 Sierras. When you consider that GM moved 824,683 examples of its light-duty pickups in 2015, this small run represents 0.08-percent of all Silverado/Sierra production, and GM says it "will monitor the market closely ... and adjust as appropriate moving forward." But that's not the only limitation. The eAssist trucks will only be sold through California dealers. For the Silverado, eAssist can only be optioned on the 1500 Crew Cab 1LT 2WD model, and for the Sierra, the fuel-saving technology is solely available on the 1500 SLT Crew Cab 2WD model with the SLT Premium Plus package. Granted, in terms of the Sierra, that means you get niceties like LED headlights and taillights, Apple CarPlay and Android Auto, Bose premium audio, heated seats and steering wheel, lane keep assist, and more. In the trucks, eAssist combines a small electric motor and 0.45-kWh battery pack with the pickups' 5.3-liter V8. GM estimates total output of 355 horsepower and 383 pound-feet of torque – no more horsepower than the non-eAssist trucks, but three more pound-feet of torque. GM says the eAssist trucks can tow up to 9,400 pounds, and the battery only adds 100 pounds to the trucks' weight. The electric motor provides 13 hp and 44 lb-ft of torque for a boost of acceleration off the line, or during passing. It also allows the engine to run in four-cylinder mode for longer periods of time. eAssist uses regenerative braking to help power onboard electrical systems, and adds start/stop to the powertrain. Finally, the so-equipped trucks have a six-percent improvement in aerodynamics, thanks to a soft tonneau cover and active grille shutters in the front fascia. Great news is, the eAssist option is relatively inexpensive, only costing $500. But good luck getting your hands on one.