GM Service Manual Online
For 1990-2009 cars only
8 Digit GM Part Number: The scan tool displays an 8 digit number which indicates the GM part number of the module.

Battery Voltage: The scan tool displays the current state of the battery in volts.

Calibration ID: The scan tool displays a 4 digit number which indicates the calibration ID number of the module.

Horn Output: The scan tool displays On/Off to indicate the current state of the horn as commanded by the dash intergration module (DIM).

Julian Date of Build: The scan tool displays a 3 digit number which indicates the Julian date of build of the module.

PROM ID: The scan tool displays a 4 digit number that identifies the PROM.

Year Module Built: The scan tool displays a 4 digit number which indicates the year the module was built.