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: If the On Indicator Is Lit for a Child Restraint


    The passenger sensing system is designed to turn off the front outboard passenger frontal airbag if the system determines that an infant is present in a child restraint. If a child restraint has been installed and the ON indicator is lit: Turn the vehicle off...

    GMC Terrain 2018-2023 Owners Manual: Automatic Transmission


    The shift switches are on the center stack. The selected gear position will illuminate red on the shift switch, while all others will be displayed in white. If the shift is not immediate, as in very cold conditions, the indicator on the shift switch may blink until it is fully engaged...

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