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 InformationExterior Lighting
The exterior lamp control is on the turn signal lever on the left side of the
steering column.
There are four positions:
Turns on the headlamps together with
the parking lamps and instrument panel lights.
Turns on the parking lamps including
all lamps, except the headlamps.
Turns the ...
Automatic Headlamp System
When it is dark enough outside and the exterior lamp control is in the automatic
position, the headlamps come on automatically. See Exterior Lamp Controls on page
6-1.
The vehicle has a light sensor on top of the instrument panel. Make sure it is
not covered, or the headlamps will be on w ...
Clock
Radio without Touchscreen
The infotainment system controls are used to access the time and date settings
through the menu system. See Operation on page 7-6 for information about how to
use the menu system.
Setting the Time and Date
Press the or CONFIG
button and select Time and D ...