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Re: Buick Headquarters Address
From inside the U.S.:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
From inside Canada:
GM of Canada
1908 Colone Sam
Oshawa, Ontario
L1H 8P7, Canada
Mail Code 163-005
1-800-4A-BUICK
Buick Customer Relations Center
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