GMC Terrain: Setting Adaptive Cruise Control / Irregular Objects Affecting ACC

GMC Terrain 2018-2026 Owners Manual / Driving and Operating / Cruise Control / Setting Adaptive Cruise Control / Irregular Objects Affecting ACC

ACC may have difficulty detecting the following objects:

Vehicles in front of your vehicle that have a rear aspect that is low, small, or irregular
An empty truck or trailer that has no cargo in the cargo bed
Vehicles with cargo extending from the back end
Non-standard shaped vehicles, such as vehicle transport, vehicles with a side car fitted, or horse carriages
Vehicles that are low to the road surface
Objects that are close to the front of your vehicle
Vehicles on which extremely heavy cargo is loaded in the cargo area or rear seat

GMC Terrain. Irregular Objects Affecting ACC

Stationary or Very Slow-Moving Objects

Warning ACC may not detect and react to stopped or slow-moving vehicles ahead of you. For example, the system may not brake for a vehicle it has never detected moving...

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...

Other information:

GMC Terrain 2018-2026 Owners Manual: Raising the Seatback

Warning If either seatback is not locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always push and pull on the seatbacks to be sure they are locked. Warning A seat belt that is improperly routed, not properly attached, or twisted will not provide the protection needed in a crash...

GMC Terrain 2018-2026 Owners Manual: Lighting Conditions Affecting ACC

The ACC front camera can be affected by poor lighting conditions, and ACC may have limited performance when: There are changes in brightness, such as entering and exiting tunnels, bridges, and overpasses. Low sun angles cause the camera to not detect objects, or it is more difficult to detect objects in the same traffic lane...

Tire Pressure Light

GMC Terrain. Tire Pressure Light

For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on briefly when the engine is started. It provides information about tire pressures and the TPMS.