For 1990-2009 cars

Table 1: | Scan Parameter Definition
Table 2: | Scan Tool Controller Information Definition

#### Scan Parameter Definition

Parameter | Display | Description
--- | --- | ---
Current DTC | Bxxxx or Uxxxx | The letter B or U, followed by the number of each diagnostic trouble code (DTC) set this ignition cycle.
History DTC | Bxxxx or Uxxxx | The letter B or U, followed by the number of each diagnostic trouble code (DTC) set this ignition cycle.
Ignition Voltage | xx.xx Volts | Voltage detected by the SDM between circuits 39 (ignition) and 850 (ground).
Driver Side Belt Status | Buckled/Unbuckled | Current status of driver's seat belt switch.
Driver Resistance | xx.xx Ohms | Driver deployment loop resistance value measured by SDM.
Left Curtain Resistance | xx.xx Ohms | Left curtain deployment loop resistance valve measured by SDM
Right Curtain Resistance | xx.xx Ohms | Right curtain deployment loop resistance vavle measured by SDM
Passenger Resistance | xx.xx Ohms | Passenger deployment loop resistance measured by SDM

#### Scan Tool Controller Information Definition

Parameter | Display | Description
--- | --- | ---
PROM ID | xxxx | Programmable read only memory identification number
Calibration ID | xxxx | The SDM's calibration identification number
Left Curtain Side Impact Sensor | xx | Left SIS identification number sent to the SDM when the ignition is first turned on.
Right Curtain Side Impact Sensor | xx | Right SIS identification number sent to the SDM when the ignition is first turned on.
Julian Date of Build | xxx | Day of the year SDM was built, 0-365.
Year Module Built | xxxx | Year SDM was built.
Component Serial Number | xxxx | The SDM's serial number.
8 Digit GM Part Number | xxxxxxxx | SDM production or service part number stored within the SDM.