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:
Heated and Ventilated Seats
The buttons are on the climate control panel.
: Press to cool the entire seat.
: Press to heat the seatback only.
: Press to heat the seat and seatback.
Press the desired button once for the ...
Immobilizer Operation (Keyless Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the ignition
control knob is turne ...
TIRE LEARNING ACTIVE
This message displays when the
Tire Pressure Monitor System
(TPMS) is re-learning the tire
positions on the vehicle.
The tire positions must be
re-learned after rotating the tires
or after ...