GMC Terrain: Setting Adaptive Cruise Control / 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.
• Lighting is poor in the evening or early morning
• There are multiple changes in brightness or shadows along the vehicle roadway.
• In a tunnel without the headlamps on, or in a tunnel when there is a vehicle in front that does not have its taillamps on.
• Subjected to strong light from opposing lane traffic in the front of the vehicle, such as high-beam headlamps from oncoming traffic.