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:
Automatic Transmission Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the v ...
Tire and Loading Information Label
A vehicle specific Tire and Loading Information
label is attached to the center pillar (B-pillar).
With the driver’s door open, you will find the label
attached below the door lock post (st ...
Trunk Release
In addition to the trunk release button on the RKE
transmitter, there is a remote release
button located
on the instrument panel.
See Trunk. ...