GMC encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail, refer to the addresses below.

GM Medium Duty Truck Customer Assistance Center
Customer Assistance Center
P.O. Box 44947
Detroit, MI 48244
www.GMC.com

1-800-862-4389

1-800-462-8583 (For Text Telephone devices (TTYs))

Fax Number: 313-381-0022

From Puerto Rico

1-800-496-9992 (English)

1-800-496-9993 (Spanish)

Fax Number: 313-381-0022

U.S. Virgin Islands:

1-800-496-9994

Fax Number: 313-381-0022

General Motors of Canada Limited
Customer Communication Centre, CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7

1-800-263-3777 (English)

1-800-263-7854 (French)

1-800-263-3830 (For Text Telephone devices (TTYs)

Roadside Assistance: 1-800-268-6800

Please contact the local General Motors Business Unit.

General Motors de Mexico, S. de R.L. de C.V.
Customer Assistance Center
Paseo de la Reforma # 2740
Col. Lomas de Bezares
C.P. 11910, Mexico, D.F.

01-800-508-0000

Long Distance: 011-52-53 29 0 800