See also:

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

Universal Remote System Operation
Press and hold the appropriate button for at least half of a second. The indicator light will come on while the signal is being transmitted. Reprogramming Universal Home Remote Buttons Any of the ...

Unlock Feedback (Lights)
When on, the exterior lamps will flash when unlocking the vehicle with the RKE transmitter. Press the MENU/SELECT knob when Unlock Feedback (Lights) is highlighted. Turn the knob to select Flash ...