See also:

Automatic Dimming Mirror
The vehicle has an automatic dimming mirror. The driver outside mirror automatically adjusts for the glare of headlamps behind you. This feature is controlled by the on and off setting on the insi ...

Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving. Follow these tips: 1. Ease off the accelerator and then, if there is nothing in the way, steer t ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...