OnStar Services

See also:

Power Liftgate
On vehicles with a power liftgate, the vehicle must be in P (Park) to operate. The taillamps flash when the power liftgate moves. WARNING You or others could be injured if caught in the path of th ...

Electronic Range Select (ERS) Mode
ERS or manual mode allows for the selection of the range of gear positions. Use this mode when driving downhill or towing a trailer to limit the top gear and vehicle speed. The shift position indi ...

Cruise Control Light
The cruise control light is white whenever the cruise control is set, and turns green when the cruise control is active. The light turns off when the cruise control is turned off. See Cruise Cont ...