Reporting Safety Defects to General Motors

GMC Sierra / GMC Sierra Owners Manuals / Customer Information / Reporting Safety Defects / Reporting Safety Defects to General Motors

In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors.

Call 1-800-GMC-8782 (1-800-462-8782), or write:
GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
In Canada, call 1-800-263-3777
(English) or 1-800-263-7854
(French), or write:
General Motors of Canada Limited
Customer Care Centre, Mail Code:
CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7

    See also:

    Using Universal Remote
    Press and hold the appropriate Universal Remote button for at least half of a second. The indicator light will come on while the signal is being transmitted. ...

    Air Conditioning
    A/C (Air Conditioning): Press to turn the air conditioning on or off. If the fan is turned off or the outside temperature falls below freezing, the air conditioning will not work. (Recirculation) ...

    Heavy-DutyTrailer Wiring Harness Package
    For vehicles equipped with heavy duty trailering, the harness connector is mounted in the bumper. The seven-wire harness contains the following trailer circuits: • Yellow: Left Stop/Turn Signal ...