Your complete satisfaction is important to us. We have facilities, representatives, technicians, tools, and up-to-date information to promptly resolve your questions, or concerns. We provide multiple convenient ways to contact us 7 days a week, 24 hours a day.
EMAIL
Click the link below to open our email contact form.
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
TELEPHONE
Your vehicle concerns are important to us. Please feel free to contact us with any questions or feedback. To better address your comments and concerns, please choose from the phone numbers below. GMC Customer Assistance Centers are open Monday through Friday from 8:00 a.m. to 9:00 p.m. EST, Saturday from 8:00 a.m. to 9:00 p.m. EST, and closed on Sunday.
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:
1-800-551-4123
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.
GMC Owner Center
For questions about managing your vehicle on GMC.com
