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:
Finding a Program Type (PTY) Station(RDS and XM™)
To select and find a desired PTY perform the
following:
1. Press the TYPE button to activate program
type select mode. P-TYPE and the last
selected PTY displays.
2. Turn the TYPE knob or press ...
Brake System Warning Light
The vehicle’s hydraulic brake system is divided into two
parts. If one part is not working, the other part can
still work and stop the vehicle. For good braking both
parts need to be working.
...
Lower Anchors and Tethers for Children (LATCH System)
The LATCH system holds a child restraint during driving or in a crash. This system
is designed to make installation of a child restraint easier. The LATCH system uses
anchors in the vehicle and at ...