GM has announced a recall for certain 2018-2019 vehicles including Chevy Equinox, Bolt EV, Cruze, Impala, Malibu, and Volt, Buick Regal and LaCrosse, Cadillac XTS and GMC Terrain, built from March 2018 to July 2018.
The rear brake caliper pistons may have an insufficient coating, causing gas pockets to form, possibly reducing rear brake performance.