Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if the
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and
an Advisor can run a check.
See also:
XM Weather
Press the Weather screen button to display the Current or Extended Forecast Weather.
The Extended Forecast Weather screen displays five days of the forecasted weather
at the vehicle’s current posit ...
Interior Mirrors
Automatic Dimming
Rearview Mirror
The vehicle has an automatic
dimming inside rearview mirror.
Automatic dimming reduces the
glare of headlamps from
behind you.
If the vehicle has a rear vi ...
If the On Indicator Is Lit for a Child Restraint
If a child restraint has been installed and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such ...