Read the latest on GM's plug-ins Click here to email GM via their website Email Volt Team volt@chevy.com Mailing Address General Motors Corporation P.O. Box 33170 Detroit, MI 48232-5170 Leaders You Can Contact at GM G. Richard Wagoner Jr. Chairman and Chief Executive Officer General Motors Corporation 300 Renaissance Center Mail Code 482-C39-B50 Detroit, MI 48265 (313) 556-5000 (517) 272-3709 FAX Robert A. Lutz Vice Chairman, Product Development General Motors Corporation 300 Renaissance Center Mail Code 482-C39-B40 Detroit, MI 48265 (313) 556-5000 (517) 272-3709 FAX bob.lutz@gm.com David Barthmuss Manager Environment and Energy Communications 505 Marin St. #216 Thousand Oaks, CA 91360 (805) 805-279-6414 mobile (805) 373-9572 (805) 373-9572 FAX dave.barthmuss@gm.com GM's Subsidiary Companies Click here to email Chevy via their website Mailing Address Chevrolet P.O. Box 33170 Detroit, MI 48232-5170 Telephone Number 1-800-222-1020 Click here to email Buick via their website. Mailing Address Buick Customer Assistance Center P.O. Box 33136 Detroit, MI 48232-5136 Telephone Number 1-800-422-8425 Click here to email Saab via their website. Mailing Address Saab Automobile USA P.O. Box 33166 Detroit, MI 48232-5166 Telephone Number 1-800-955-9007 Click here to email Cadillac via their website. Mailing Address Cadillac Customer Assistance Center P.O. Box 33169 Detroit, MI 48232-5169 Telephone Number 1-800-333-4223 Click here to email GMC via their website. Mailing Address GMC Customer Assistance Center P.O. Box 33172 Detroit, MI 48232-5172 Telephone Number 1-800-551-4123 International Contacts GM de México carlos.gelista@gm.com GM Canada, Ltd. stew.low@gm.com