GM Service Manual Online
For 1990-2009 cars only
8 Digit GM Part Number: Display indicates the part number of the Module.

Accessory 1: Display indicates On when the Accessory (Accessory/Run) voltage circuit of the module receives a battery voltage signal from the ignition switch.

Battery Voltage: Display indicates the battery voltage input, 0-30 volts is the operating range.

Calibration ID: Display indicates the 4-digit calibration ID of the module.

Component Serial No. xx: Digits xx of the component serial number of the control module.

Crank: Display indicates On when the Crank Voltage circuit of the module receives a battery voltage signal from the ignition switch.

Driver/Passenger/Left Rear/Right Rear Door Ajar Sw.: Displays the status of the respective door ajar switch.

Ignition 0: Display indicates On when the Unlock/Run/Crank Voltage circuit of the module receives a battery voltage signal from the ignition switch.

Ignition 1: Display indicates On when the Ignition 1 (Run/Crank) voltage circuit of the module receives a battery voltage signal from the ignition switch.

Ignition Voltage: Display indicates the ignition voltage input, 0-30 volts is the operating range.

Julian Date of Build: The scan tool displays year and day. The first digit indicates the last digit of the year that the module was built. The remaining 3 digits indicate the day of the year that the module was built.

Key in Ignition: The scan tool displays Yes/No. The scan tool displays Yes when the key is in the ignition and the BCM receives a signal from the ignition switch.

PROM ID: Display indicates the 4-digit PROM ID of the module.