OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationInstrument Panel Illumination Control
This feature controls the brightness of the instrument panel controls and infotainment
display screen. The thumbwheel is to the left of the steering column on the instrument
panel.
(Instrument Panel Brightness):
Move the thumbwheel up or down to brighten or dim the instrument panel contr ...
Tire Inspection
We recommend that the tires, including the spare tire, if the vehicle has one,
be inspected for signs of wear or damage at least once a month.
Replace the tire if:
The indicators at three or more places around the tire can be seen.
There is cord or fabric showing through the tire's rubb ...
Front Fog Lamp Light
For vehicles with front fog lamps,
this light, in the display on the top of the center stack, comes on when the front
fog lamps are in use.
The light goes out when the front fog lamps are turned off. See Fog Lamps on
page 6-4.
Lamps On Reminder
This light comes on when the exterior
lamps ...