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 ...

RKE without Remote Start Shown
RKE without Remote Start Shown (Lock): Press to lock all doors. The turn signal indicators may flash and/or the horn may sound to indicate locking, see “Locking Feedback” under Vehicle ...

Vehicle Information Menu Items
Press MENU on the turn signal lever until the Vehicle Information Menu is displayed. Use w / x to scroll through the following menu items: Unit Tire Pressure Remaining Oil Life Battery Vol ...