There have been reports in the field that a garage shift from reverse to drive produces a “snapping” sound, which has been traced to a defect with the previous design output shaft assembly. Installing the “UNIGEAR” output shaft assembly seemed to have eliminated the garage shift noise.
The owner of a 2010 Cadillac CTS started to notice a clicking sound when placing the transmission into drive or reverse. Due to a busy schedule, the owner chose to delay bringing the vehicle in for an inspection, until one morning that the transmission failed to make any noise. The noise was gone, replaced by a no-movement condition that brought the busy schedule to a screeching halt.