The CTA Chevy Flywheel Holding Tool, No. 3872, is designed to hold the flywheel in place when servicing the flywheel bolt and/or balancer. It mounts in place of the starter which engages the flywheel ring gear teeth. It services 2013-2014 Cadillac ATS, 2014 CTS, 2013-2014 Chevy Malibu, 2014 Impala, and 2011-2017 Buick Regal.