GMC Terrain: Seats and Restraints / Front Seats

Head Restraints

The vehicle’s front seats have adjustable head restraints in the outboard seating positions. Warning With head restraints that are not installed and adjusted properly, there is a greater chance that occupants will suffer a neck/spinal injury in a crash...

Seat Adjustment

Warning You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. Adjust the driver seat only when the vehicle is not moving...

Other information:

GMC Terrain 2018-2022 Owners Manual: Resuming a Set Speed

If the ACC is set at a desired speed and then the brakes are applied, ACC is disengaged without erasing the set speed from memory. To begin using ACC again, press RES+ briefly while moving more than 5 km/h (3 mph). The vehicle returns to the previous set speed...

GMC Terrain 2018-2022 Owners Manual: Fuel (Diesel). E85 or FlexFuel

Fuel (Diesel). Use of diesel fuel with ultra low sulfur content (15 ppm, maximum) is required. See Fuel for Diesel Engines. E85 or FlexFuel No E85 or FlexFuel Gasoline-ethanol fuel blends greater than E15 (15% ethanol by volume), such as E85, cannot be used in this vehicle...