Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Conditions in Which Remote Start Will Not Work
The remote vehicle start feature
will not operate if any of the
following occur:
- The ignition is in any position
other than LOCK/OFF.
- A keyless access transmitter is
inside the vehicle.
...
Universal Remote System
Vehicles with the Universal Remote System will have these buttons located in
the headliner.
This system provides a way to replace up to three remote control transmitters
used to activate device ...
Anti-theft Alarm System Messages
SERVICE THEFT DETERRENT
SYSTEM
This message displays when there
is a problem with the theft-deterrent
system programmed in the key.
A fault has been detected in the
system which means that t ...