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 2018-2026 Owners Manual: ACC Automatically Disengages

ACC may automatically disengage and the driver will need to manually apply the brakes to slow the vehicle if: The front camera is blocked or visibility is reduced. The Traction Control System (TCS) or StabiliTrak/ESC system has activated or been disabled...

GMC Terrain 2018-2026 Owners Manual: Interior Mirrors

Interior Rearview Mirrors Adjust the rearview mirror for a clear view of the area behind the vehicle. Do not spray glass cleaner directly on the mirror. Use a soft towel dampened with water. Manual Rearview Mirror Push the tab forward for daytime use and pull it rearward for nighttime use to avoid glare of the headlamps from behind...