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:
Parking over Things
That Burn
WARNING!
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn. ...
Twilight Sentinel
This feature automatically turns the lamps on and off. A light sensor on top
of the instrument panel makes the Twilight Sentinel® work, so be sure it is not
covered.
With Twilight Sentinel th ...
Additional Factors Affecting System Operation
Safety belts help keep the passenger in position on the seat during vehicle
maneuvers and braking, which helps the passenger sensing system maintain the
passenger airbag status.
See “Safety Belts ...