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:
Bulb Replacement
For the proper type of replacement bulbs, see Replacement Bulbs .
For any bulb-changing procedure not listed in this section, contact your dealer. ...
Power Door Locks
: Press to unlock the doors.
: Press to lock the doors. ...
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins ...