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:
Passenger Sensing System
The passenger sensing system, if equipped, turns off the front outboard passenger
frontal airbag under certain conditions. No other airbag is affected by the passenger
sensing system.
If the vehi ...
Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless
service carrier.
- Press to answer an incoming call when another call is active. The original call
is placed on hold.
...
Manual Transmission
Skip Shift (CTS–V)
Under light acceleration, the
transmission will only allow
shifting from 1 (First) to 4 (Fourth).
This helps improve fuel mileage.
Under harder acceleration, Skip
Shift is ...