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:
Driver Information Center (DIC)
The Driver Information Center (DIC)
provides status of many vehicle
systems. The DIC displays warning/
status messages. The DIC display
is at the bottom of the instrument
panel cluster. The ...
Using OnStar® Destination Download (US and Canada)
Press the blue OnStar button and an Advisor can locate a point-of-interest or
an address and download the necessary information or coordinates to your navigation
system. Once the destination is do ...
TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code. The identification code needs
to be matched to a new tire/wheel position after rotating the vehicle’s tires or
replacing one or more of the TPMS ...