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:
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 ...
Washer Fluid Messages
WASHER FLUID LOW ADD
FLUID
This message displays when the
vehicle is low on windshield washer
fluid. Refill the windshield washer
fluid reservoir as soon as possible.
See Washer Fluid
for ...
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 ...