Your complete satisfaction is important to us, and we're here to help. Please select your preferred contact choice below.
Please mail your comments, questions or concerns to one of the following Customer Assistance Centers:
In the United States:
GMC Customer Assistance Center | P.O. Box 33172 | Detroit, MI 48232-5172
Canada - GM of Canada | 1908 Colonel Sam | Oshawa, Ontario | L1H 8P7, Canada | Mail Code 163-055