For 1990-2009 cars

The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.

8 Digit GM Part Number: The scan tool displays an 8 digit part number. This number is the GM part number that is stored within the SDM memory.
ADS A/D: The scan tool displays 0 - 20 volts. This is the auxiliary discriminating sensor signal input signal into the SDM.
ADS Monitoring: The scan tool displays whether the ADS Monitoring is enabled or disabled.
Calibration ID: The scan tool displays a 4 digit number. This calibration ID is the check sum of the SDM read only memory contents.
Component Serial Number: The scan tool displays the SDM component serial number.
Driver Frontal Loop: The scan tool displays whether the driver frontal air bag deployment loop is enabled or disabled.
Driver Side Bag High: The scan tool displays 0 - 20 volts. This is the voltage that the SDM supplies to the driver side impact sensor (SIS).
Driver Side Belt Status: The scan tool displays whether the driver seat belt is buckled or unbuckled.
Driver Side Impact Sensor ID: The scan tool displays a 2 digit ID number. This is the driver SIS ID that is sent to the SDM when the ignition is first turned ON.
Driver Side Loop: The scan tool displays whether the driver side air bag deployment loop is enabled or disabled.
Ignition Voltage: The scan tool displays 0 - 20 volts. This is the system voltage measured by the SDM between the ignition input and ground.
Julian Date of Build: The scan tool displays a 3 digit number. An example would be 723. 723 is July 23 which is day 204 based on the Julian Calendar.
Passenger Frontal Loop: The scan tool displays whether the passenger frontal air bag deployment loop is enabled or disabled.
Passenger Side Bag High: The scan tool displays 0 - 20 volts. This is the voltage that the SDM supplies to the passenger side impact sensor (SIS).
Passenger Side Belt Status: The scan tool displays whether the passenger seat belt is buckled or unbuckled.
Passenger Side Impact Sensor ID: The scan tool displays a 2 digit ID number. This is the passenger SIS ID that is sent to the SDM when the ignition is first turned ON.
Passenger Side Loop: The scan tool displays whether the passenger side air bag deployment loop is enabled or disabled.
PROM ID: The scan tool displays a 4 digit number. This number is the programmable read-only memory (PROM) ID.
Year Module Built: The scan tool displays what year the module was built.