2012 Audi A6 2013 Audi A6 2014 Audi A6 See More Service Bulletins Corrective action: Dealers will either flush the auto transmission fluid and/or replace the transmission control module.

Faulty transmission control valve can fail and cause rear wheels to lock up, increasing risk of crash, according to General Motors.

To fix the issue, dealers will install a new transmission control module software free of charge and GM will provide a special coverage program for repairing transmissions identified as containing ...