This bulletin applies to a number of GM products including 2013-2015 Cadillac ATS/2012-2015 SRX, 2012-2017 Buick LaCrosse/Regal/Verano, 2012-2017 Chevy Caprice, 2016-2018 Captiva/ 2011-2017 Equinox/2012-2018 Impala and 2011-2017 GMC Terrain.
Some owners of 2013 Chevy Caprice vehicles may comment about roughness or vibration felt at stops and a clunk from the driveline on acceleration from stops. This may be caused by a broken motor mount.
Owners of 2012 Chevy Caprice vehicles (civilian or police) may complain about a belt squeal noise and/or a perceived crankshaft balancer wobble. In most cases, the wobble is an optical illusion because the design of the balancer gives the appearance that it is moving laterally more than it is.
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