GM Service Manual Online
For 1990-2009 cars only
Calibration ID: Displays the calibration ID for the SDM.

Driver Belt Status Changed This Ignition Cycle: Displays Yes or No. Indicates if the driver seat belt has been buckled or unbuckled after the ignition is turned ON.

Driver Seat Belt A/D: Displays 0 or 12 volts. The status of the driver seat belt switch signal. Buckled is 12 volts and Unbuckled is 0 volts.

Driver Seat Belt Status: Displays Unbuckled or Buckled. The status of the driver seat belt switch signal.

PROM ID: Displays the PROM ID for the SDM.