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:
Malfunction Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors the operation
of the vehicle to ensure emissions
are at acceptable levels, to produce
a cleaner environment. ...
Fog Lamps
The fog lamps button is on the exterior lamps control to
the left of the steering column.
(Fog Lamps): Press the exterior
lamps button to
turn the fog lamps on or off. A light comes on in
th ...
Lock Sensor
When all doors are closed and the ignition is off, the vehicle can be locked
by pressing this area on the door handle. This feature will be available for several
minutes after the vehicle has be ...