Workshop Repair and Service Manuals GMC SIERRA
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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...
Reporting Safety Defects to the United States Government      If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying General...
Reporting Safety Defects to the Canadian Government      If you live in Canada, and you believe that the vehicle has a safety defect, notify Transport Canada immediately, and notify General Motors of Canada Limited. Call Transport Canada at 1-800-333-0510 or write to: Transport...