8-3
We encourage you to call the toll-free number in order
to give your inquiry prompt attention. Please have the
following information available to give the Customer
Assistance Representative:
D
Vehicle Identification Number (This is available
from the vehicle registration or title, or the plate
at the top left of the instrument panel and visible
through the windshield.)
D
Dealership name and location
D
Vehicle delivery date and present mileage
When contacting GMC, please remember that your
concern will likely be resolved at a dealer’s facility.
That is why we suggest you follow Step One first if
you have a concern.
Customer Assistance for Text
Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or
speech
-impaired and who use Text Telephones (TTYs),
GMC has TTY equipment available at its Customer
Assistance Center. Any TTY user can communicate with
GMC by dialing: 1
-800-GMC-8583 (1-800-462-8583).
(TTY users in Canada can dial 1
-800-263-3830.)
Customer Assistance Offices
GMC encourages customers to call the toll-free number
for assistance. If a U.S. customer wishes to write to GMC,
the letter should be addressed to GMC’s Medium Duty
Truck Customer Assistance Center.
United States
GMC Medium Duty Truck
Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
1-800-GMC-8782 (1-800-462-8782)
1-800-462-8583 (For Text Telephone devices (TTYs))
Roadside Assistance: 1-800-GMC-8782
From:
Puerto Rico: 1-800-496-9992 (English)
1-800-496-9993 (Spanish)
U.S. Virgin Islands: 1-800-496-9994
Fax Number: 313-381-0022