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:
Initial Drive Information
This section provides a brief overview about some of the important features
that may or may not be on your specific vehicle.
For more detailed information, refer to each of the features which can ...
Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the Index.
: Airbag Readiness Light
: Air Conditioning
...
BATTERY SAVER ACTIVE
This message displays when the
system detects that the battery
voltage is dropping below expected
levels. The battery saver system
starts reducing certain features of
the vehicle that may be ...