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:
Using the Store Command
The store command allows a phone number to be
stored without entering the digits individually.
1. Press and hold for two seconds.
The system
responds with “Ready” followed by a tone.
2. S ...
Entry Lighting
The headlamps, taillamps, license plate lamps, back-up lamps, dome lamps, and most of the interior lights turn on briefly when the Remote Keyless Entry (RKE)
is pressed.
See Remote Keyless Entry ...
Accessories and Modifications
Adding non-dealer accessories or making modifications
to the vehicle can affect vehicle performance and safety, including such things
as airbags, braking, stability, ride and handling, emissions s ...