GM Service Manual Online
For 1990-2009 cars only
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.