GMC 2011 Sierra Denali, Owner'S Manual, Page: 476 / 492

13-14 Customer Information
However, NHTSA cannot
become involved in individual
problems between you, your
dealer, or General Motors.
To contact NHTSA, you may call
the Vehicle Safety Hotline
toll-free at 1-888-327-4236
(TTY: 1-800-424-9153); go to
http://www.safercar.gov; or
write to:
Administrator, NHTSA
1200 New Jersey Avenue, S.E.
Washington, D.C. 20590
You can also obtain other
information about motor
vehicle safety from
http://www.safercar.gov
.
Reporting Safety Defects
to the Canadian
Government
If you live in Canada, and you
believe that your vehicle has a
safety defect, notify Transport
Canada immediately, and notify
General Motors of Canada Limited.
Call them at 1-800-333-0510 or
write to:
Transport Canada
Road Safety Branch
2780 Sheffield Road
Ottawa, Ontario K1B 3V9
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 Communication Centre,
Mail Code: CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7