GMC Terrain: 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