GM Service Manual Online
For 1990-2009 cars only

The Theft Deterrent Immobilizer/Keyless Entry scan tool data definitions contain a brief description of all related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.

Last Alarm Cause: The scan tool displays the cause of the alarm.

Last FOB Used: The scan tool displays which key fob was last used.

Last Key Pressed On FOB: The scan tool displays the last key pressed on the key fob.

2nd to Last Alarm Cause: The scan tool displays the cause of the alarm.

3rd to Last Alarm Cause: The scan tool displays the cause of the alarm.

4th to Last Alarm Cause: The scan tool displays the cause of the alarm.

5th to Last Alarm Cause: The scan tool displays the cause of the alarm.