Contact Us

For information about our aftermarket adaptive equipment reimbursement program :

GM Mobility Assistance Center

PO Box 5053
Troy, MI, 48007

WorkPhone: 1-800-323-9935

TTY: 1-800-833-9935

For non-mobility-related vehicle assistance: GM Divisional Customer Assistance

Please click here for a list of the appropriate GM divisional toll-free numbers including TTY/TDD numbers for the hearing-impaired.

OnStar® Subscriber Services

PO Box 1027
Warren, MI, 48090

WorkPhone: 1-888-4ONSTAR (1-888-466-7827)

TTY: 1-877-248-2080