GMC Terrain: Customer Information / Customer Assistance for Text Telephone (TTY) Users

GMC Terrain 2018-2023 Owners Manual / Customer Information / Customer Information / 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), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user in the U.S. can communicate with GMC by dialing: 1-888-889-2438. TTY users in Canada can dial 1-800-263-3830.

Customer Assistance Offices

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 and Puerto Rico GMC Customer Assistance Center P...

Online Owner Center

Online Owner Experience (U.S.) my.gmc.com The GMC online owner experience is a one-stop resource that allows interaction with GMC and keeps important vehicle-specific information in one place...

Other information:

GMC Terrain 2018-2023 Owners Manual: Tire Designations

Tire Size The following is an example of a typical passenger vehicle tire size. Passenger (P-Metric) Tire : The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U...

GMC Terrain 2018-2023 Owners Manual: Power Liftgate Operation