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U.S. GMC Hotline

GMC Division General Motors Corp.
GMC Division, General Motors Corp.
Customer Assistance Center
PO Box 33172
Detroit, MI 48232-5172
Toll free: 1-800-462-8782
Toll free: 1-800-223-7799 (roadside assistance)
TDD toll free: 1-800-462-8583
www.gmc.com