Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech impaired and who use Text Telephones (TTYs), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicate with GMC by dialing:
1-800-462-8583. TTY users in Canada can dial 1-800-263-3830.
See also:
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
General Towing Information
Only use towing equipment that has been designed for the vehicle. Contact your
dealer or trailering dealer for assistance with preparing the vehicle for towing
a trailer. See the following trailer ...
Lap-Shoulder Belt
All seating positions in the vehicle have a lap-shoulder belt.
The following instructions explain how to wear a lap-shoulder belt properly.
1. Adjust the seat, if the seat is adjustable, so you can ...