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General Motors Recalling 638,000 Pickups and SUVs

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General Motors (GM) has issued a large-scale recall of certain Chevrolet and GMC SUV and light-duty truck models over a problem that could lead to one of the rear wheels braking without warning.

The models affected are 2015-2020 Chevrolet Suburban, GMC Tahoe and GMC Yukon vehicles, as well as 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. However, only models equipped with a 5.3L V8 engine, all-wheel drive and a 3.08-ratio rear axle are subject to the recall.

General Motors says that the problem involves one of the sensors connected to the rear wheels; if it malfunctions when the vehicle is moving at between 41 and 60 mph (66 and 96.5 km/h), the  driveline-protection system will kick in and apply the brakes to the wheel opposite the sensor. Obviously, brake pressure applied to only one wheel represents a clear risk that could pull the vehicle to one side and potentially cause an accident.

According to GM, the problem lies with an erroneous calculation of the rear-axle ratio by the control module. Vehicles will get a software update to resolve the issue.

We have contacted General Motors Canada to find out how many vehicles are affected by the recall in Canada, and will have an update for you as soon as possible.

2019 GMC Yukon
Photo: GMC
2019 GMC Yukon