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

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