GMC Phone Numbers:
GMC Information Center (to request literature):
1-888-988-7267
Monday – Friday: 8 a.m. to 9 p.m.
Saturday: 9 a.m. to 6 p.m. (EST)
GMC Customer Relations Center (for GMC owners):
1-800-462-8782
Monday-Saturday: 8 a.m. to 9 p.m. (EST)
Sunday: Closed
To order service bulletins about your GMC:
1-888-551-4123
Monday – Friday: 8 a.m. to 6 p.m. (EST)
GMC for persons with disabilities (GM Mobility Center):
1-800-323-9935
Monday – Friday: 8 a.m. to 8 p.m. (EST)
Leasing a GMC using SmartLease:
1-800-32-SMART
Monday – Friday: 8 a.m. to 9 p.m. (EST)
Applying for a GM Card:
1-800-8GM-CARD
Open for applications 24 hours a day/7 days a week.
Mail Addresses
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
In Canada:
Canada – GM of Canada | 1908 Colonel Sam | Oshawa, Ontario | L1H 8P7, Canada | Mail Code 163-055
Chat
Follow GMC:
- Facebook: http://www.facebook.com/gmc
- Twitter: http://twitter.com/thisisgmc
- Youtube: http://www.youtube.com/gmc