Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Safety
The National Highway Traffic Safety Administration gave the 2007 Yukon a
five-star frontal crash-test rating; it hasn't done a side-impact test as of
this writing. Rollover ratings were listed at ...
OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services.
The OnStar system statu ...
Setting Preset Stations
To store presets:
1. Tune to a radio station.
2. Press and hold one of the six numbered pushbuttons for three seconds until a beep sounds.
3. Repeat Steps 1 and 2 to store additional radio stations ...