GMC Terrain: Driving and Operating / Driver Assistance Systems

Cleaning the Sensing System

The camera sensor on the windshield behind the rearview mirror can become blocked by snow, ice, dirt, mud, or debris. This area needs to be cleaned for ACC to operate properly...

Driver Assistance Systems

This vehicle may have features that work together to help avoid crashes or reduce crash damage while driving, backing, and parking. Read this entire section before using these systems...

Other information:

GMC Terrain 2018-2025 Owners Manual: Heated Rear Seats

Warning If temperature change or pain to the skin cannot be felt, the seat heater may cause burns. See the Warning under Heated and Ventilated Front Seats. If equipped, the rear heated seat buttons are on the rear of the center console. Press to heat the left or right outboard seat cushion and seatback...

GMC Terrain 2018-2025 Owners Manual: OnStar Additional Information

In-Vehicle Audio Messages Audio messages may play important information at the following times: Prior to vehicle purchase. Press to set up an account. After change in ownership and at 90 days. Transferring Service Press to request account transfer eligibility information...