In addition to notifying NHTSA (or Transport Canada) in a situation like this, we certainly hope you'll notify us. Please call us at 1-800-862-4389, or write:

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

In Canada, please call us at 1-800-263-3777 (English) or 1-800-263-7854 (French). Or, write:

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