Tell GM About Your Problems with Your Car or Truck

Here is the contact information you need to make your dissatisfaction and problem/claim known to GM:

Buick

Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
1-800-521-7300

GM of Canada
1908 Colone Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005

Cadillac

Cadillac Customer Assistance Center
P. O. Box 33169
Detroit, MI 48232-5169
1-800-333-4CAD

GM of Canada
1908 Colone Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005
1-800-263-3777

Chevrolet

Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
1-800-222-1020
cac@chevrolet.com

Customer Assistance Center
GM of Canada
1908 Colone Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005
1-800-263-3777 (English)
1-800-263-7854 (French)

GM Legal Department
200 Renaissance Center
PO Box 200
Detroit, Michigan 48265

Chevrolet Central Information Desk
1-800-CHEVY-MI

GMC

GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
1-800-462-8782

Oldsmobile

Oldsmobile Customer Assistance Center
P.O. Box 33171
Detroit, MI 48232-5171
1-800-442-OLDS

Oldsmobile Customer Assistance Center
GM of Canada
1908 Colonel Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005
Inside Canada: 1-800-263-3777

Pontiac

Pontiac Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
1-800-762-2737

Pontiac Customer Assistance Center
GM of Canada
1908 Colone Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005
1-800-263-3777