GM Service Manual Online
For 1990-2009 cars only
Table 1: Driver Seat Module (DSM)
Table 2: Driver Door Module (DDM)
Table 3: Passenger Door Module (PDM)

Driver Seat Module (DSM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Running

8 Digit GM Part Number

Module Information 1

Numeric

Varies

Battery Voltage

Inputs/Outputs

Volts

Varies

Driver Seat Heat Zone

Inputs/Outputs

Off/Back Only/Back and Cushion

Off

Driver Seat Temp. Setting

Inputs/Outputs

Off/Low/Med/High

Off

Drvr. Seat Heat Sensor

Sensor Data

0-5 Volts

Varies

Ign. Since Current DTC

Inputs/Outputs

Cycles

Varies

Julian Date of Build

Module Information 1

Numeric

Varies

Manufacture Enable Counter

Module Information 2

0-255

0

Passenger Seat Temp. Setting

Inputs/Outputs

Off/Low/Med/High

Off

Psgr. Seat Heat Sensor

Sensor Data

0-5 Volts

Varies

Psgr. Seat Heat Zone

Inputs/Outputs

Off/Back Only/Back and Cushion

Off

Software Part Number

Module Information 2

Numeric

Varies

Software Revision Number

Module Information 2

Two Letters

Varies

Year Module Built

Module Information 1

Numeric

Varies

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Running

Back Only Heat Indicator

Inputs

Off/On

Off

Back Only Heat Indicator

Outputs

Off/On

Off

Back Only Heat Switch

Inputs

Active/Inactive

Inactive

Heat Indicator Low

Inputs

Off/On

Off

Heat Indicator Low

Outputs

Off/On

Off

Heat Indicator Medium

Inputs

Off/On

Off

Heat Indicator Medium

Outputs

Off/On

Off

Heat Indicator High

Inputs

Off/On

Off

Heat Indicator High

Outputs

Off/On

Off

Heated Seat Switch

Inputs

Active/Inactive

Inactive

Passenger Door Module (PDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Running

Back Only Heat Indicator

Inputs

Off/On

Off

Back Only Heat Indicator

Outputs

Off/On

Off

Back Only Heat Switch

Inputs

Active/Inactive

Inactive

Heat Indicator Low

Inputs

Off/On

Off

Heat Indicator Low

Outputs

Off/On

Off

Heat Indicator Medium

Inputs

Off/On

Off

Heat Indicator Medium

Outputs

Off/On

Off

Heat Indicator High

Inputs

Off/On

Off

Heat Indicator High

Outputs

Off/On

Off

Heated Seat Switch

Inputs

Active/Inactive

Inactive