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:
Before Driving
The RSE is designed for rear seat passengers only. The driver cannot safely view
the video screen while driving and should not try to do so.
In severe or extreme weather conditions, the RSE system ...
Park Tilt Mirrors
If the vehicle has the memory package, the passenger and/or driver mirror tilts
to a preselected position when the vehicle is in R (Reverse). This feature lets
the driver view the curb when parall ...
Manual Operation
(Fan Control): Press the up or down
arrows to increase or decrease the fan speed Pressing this button when the system
is off will turn the system on.
Pressing either arrow while using automatic ...