More than 140,000 Chevrolet Malibu midsize cars are being recalled by General Motors to fix a problem with the power-assisted brakes, putting the company's May recall total near 200,000.
The recall affects 2014 Malibu's with 2.5-liter four-cylinder engines and stop-start technology that shuts off the engine at red lights.
GM says a software problem in the brake control computer can disable the power brakes. That means drivers would have to push the brakes harder to stop, and stopping distances would increase.
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Dealers will update the software at no cost to owners. GM will mail letters to owners starting around May 30.
GM found the problem while testing a new model that hasn't come out yet. The Malibu has a similar brake control system.
Earlier this month GM recalled 51,640 sport-utility vehicles from the 2014 model year due to software that may not register fuel levels properly, the U.S. National Highway Traffic Safety Administration said.
NHTSA said software in the engine-control module in some Buick Enclave, Chevrolet Traverse and GMC Acadia SUVs may not accurately read fuel levels, possibly resulting in empty tanks or stalled engines that could lead to crashes.
The software defect follows GM’s recall of 7 million vehicles last quarter, including 2.59 million small cars for faulty-ignition switches that allowed keys to slip out of their “on” positions, cutting engine power and disabling air bags. Federal safety regulators, U.S. Congress and the Justice Department are investigating why it took the company more than a decade to recall the Chevrolet Cobalt and other vehicles linked to 13 deaths in accidents.
Since Feb. 13, when GM began recalling vehicles with those switches, the automaker has also had at least 10 recalls in the U.S. and Canada involving 4.1 million vehicles with unrelated flaws.
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