GMC Terrain: Setting Adaptive Cruise Control / Disengaging ACC

Do Not Use ACC on Hills and When Towing a Trailer

Do not use ACC when driving on steep hills or when towing a trailer. ACC will not detect a vehicle in the lane while driving on steep hills. If the brakes are applied, ACC disengages...

Erasing Speed Memory

The ACC set speed is erased from memory if is pressed or if the ignition is turned off...

Other information:

GMC Terrain 2018-2024 Owners Manual: Storing a Flat or Spare Tire and Tools

Warning Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. To store the flat tire: Return the jack and tools to their original storage location. Replace the spare tire cover. Replace the load floor. Place the flat tire, lying..

GMC Terrain 2018-2024 Owners Manual: Setting the 3/4 Mode

To change the position the liftgate stops at when opening: Select MAX or 3/4 mode and power open the liftgate. Stop the liftgate movement at the desired height by pressing any liftgate switch. Manually adjust the liftgate position if needed. Press and hold next to the pull cup on the bottom of the liftgate until the turn signals flash and a beep sounds. This indicates the s..