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

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 2018-2025 Owners Manual: Remote Vehicle Start

If equipped, this feature allows you to start the engine from outside the vehicle. : This button will be on the RKE transmitter if the vehicle has remote start. The climate control system will use the previous settings during a remote start. The rear defog may come on during remote start based on cold ambient conditions...

GMC Terrain 2018-2025 Owners Manual: Electrical System Overload

The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the electrical load current is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed...