Customer Assistance for Text
Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or
speech-impaired and who use Text Telephones (TTYs),
HUMMER has TTY equipment available at its Customer
Assistance Center. Any TTY user can communicate
with HUMMER by dialing: 1-800-833-6537. (TTY users
in Canada can dial 1-800-263-3830.)
Customer Assistance Offices
HUMMER encourages customers to call the toll-free
number for assistance. If a U.S. customer wishes
to write to HUMMER, the letter should be addressed to
HUMMER’s Customer Assistance Center.
United States – Customer Assistance
HUMMER Customer Assistance Center
P.O. Box 33171
Detroit, MI 48232-5177
1-866-HUMMER6 (486-6376)
1-800-833-6537 (For Text Telephone devices (TTYs))
Roadside Assistance: 1-866-HUMMER6 (486-6376)
Fax Number: 313-381-0022
From Puerto Rico:
1-800-496-9992 (English)
1-800-496-9993 (Spanish)
Fax Number: 313-381-0022
From U.S. Virgin Islands:
1-800-496-9994
Fax Number: 313-381-0022
Canada – Customer Assistance
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
1-800-263-3777 (English)
1-800-263-7854 (French)
1-800-263-3830 (For Text Telephone devices (TTYs))
Roadside Assistance: 1-800-268-6800
Overseas – Customer Assistance
Please contact the local General Motors Business Unit.
Mexico, Central America and
Caribbean Islands/Countries (Except
Puerto Rico and U.S. Virgin Islands) –
Customer Assistance
General Motors de Mexico, S. de R.L. de C.V.
Customer Assistance Center
Paseo de la Reforma # 2740
Col. Lomas de Bezares
C.P. 11910, Mexico, D.F.
01-800-508-0000
Long Distance: 011-52-53 29 0 800
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