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. ...
Tachometer
The tachometer
displays the engine
speed in revolutions
per minute (rpm). ...
DIC Operation and Displays
The DIC has different displays which can be accessed by using the DIC buttons
on the turn signal lever, located on the left side of the steering wheel. The DIC
displays trip, fuel, and vehicle sys ...
