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:
Vehicle Speakers
Audio from the DVD player or an auxiliary device can be heard through the vehicle
speakers or the wireless/wired headphones, while the radio is tuned to one of the
six frequencies selected on the ...
Starting the Engine
When first starting the vehicle, the
engine idle speed will be elevated
to allow the catalytic converter, an
emissions control device, to quickly
reach operating temperature.
After approximat ...
Vehicle Speed Messages
ICE POSSIBLE DRIVE
WITH CARE
This message displays when the
outside temperature is cold enough
to create icy road conditions.
Adjust your driving accordingly.
SPEED LIMITED TO
XXX KM/H (MPH ...