To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Chevrolet has TTY equipment available at its Customer Assistance Center. Any TTY user in the U.S. can communicate with Chevrolet by dialing: 1-800-833-CHEV (2438). (TTY users in Canada can dial 1-800-263-3830.)
Customer Assistance Offices
Chevrolet encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Chevrolet, the letter should be addressed to:
United States — Customer Assistance
Chevrolet Motor Division
Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
Chevrolet.com
1-800-222-1020
1-800-833-2438 (For Text Telephone
devices (TTYs))
Roadside Assistance: 1-800-CHEV-USA (243-8872)
From Puerto Rico:
1-800-496-9992 (English)
1-800-496-9993 (Spanish)
From U.S. Virgin Islands:
1-800-496-9994
Canada — Customer Assistance
General Motors of Canada Limited
Customer Communication Centre, CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
gmcanada.com
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
Chevrolet Cobalt Service & Repair Manual. Compression Pressures
1.
Ensure engine is at room temperature
and battery is fully charged.
2.
Disconnect wiring from ignition module
and remove spark plugs.
3.
Throttle body valve should be wide
open.
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