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, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationLamp Messages
AUTOMATIC LIGHT CONTROL ON
This message is displayed when the automatic light control has been turned on.
AUTOMATIC LIGHT CONTROL OFF
This message is displayed when the automatic light control has been turned off.
XXX TURN INDICATOR FAILURE
When one of the turn signals is out, this message disp ...
Tire Sealant and Compressor Kit
WARNING
Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine
exhaust may enter the vehicle. Engine exhaust contains carbon monoxide (CO) which
cannot be seen or smelled.
It can cause unconsciousness and even death. Never run the engine in an enclosed
area that has ...
Removal Procedure
Warning: Refer to Glass and Sheet Metal Handling Warning in the
Preface section.
Disable the SIR System. Refer to SIR
Disabling and Enabling.
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove the rear side door. Refer t ...