This Preliminary Information communication provides information to the technician about vehicles that have a rotational noise coming from the rear of the vehicle during brake apply. Technician will need to follow published Service Information diagnostics. If the inspection and normal diagnosis does not identify the cause of this concern contact General Motors Technical Assistance Center to start a case. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
