GM Service Manual Online
For 1990-2009 cars only
Table 1: Memory Seat Module (MSM)
Table 2: Driver Door Switch Assembly (DDSA)

Memory Seat Module (MSM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

8-Digit GM Part Number

ID Information

Numeric

Varies

Battery Voltage

Data

Volts

Varies

Calibration ID

ID Information

Numeric

Varies

Current

Data

amps

0.5-8.5

Front Vertical Sensor

Sensor Data 1

A/D/Volts

0.0-255/0.0-5.0

Horizontal Sensor

Sensor Data 1

A/D/Volts

0.0-255/0.0-5.0

Lumbar Horizontal Sensor

Sensor Data 2

A/D/Volts

0.0-255/0.0-5.0

PROM ID

ID Information

Numeric

Varies

Rear Vertical Sensor

Sensor Data 1

A/D/Volts

0.0-255/0.0-5.0

Recline Sensor

Sensor Data 1

A/D/Volts

0.0-255/0.0-5.0

Seat Forward

Inputs and Outputs

Active/Inactive

Inactive

Seat Front Down

Inputs and Outputs

Active/Inactive

Inactive

Seat Front Up

Inputs and Outputs

Active/Inactive

Inactive

Seat Lumbar Forward

Inputs and Outputs

Active/Inactive

Inactive

Seat Lumbar Rearward

Inputs and Outputs

Active/Inactive

Inactive

Seat Rearward

Inputs and Outputs

Active/Inactive

Inactive

Seat Rear Down

Inputs and Outputs

Active/Inactive

Inactive

Seat Rear Up

Inputs and Outputs

Active/Inactive

Inactive

Seat Recline Forward

Inputs and Outputs

Active/Inactive

Inactive

Seat Recline Rearward

Inputs and Outputs

Active/Inactive

Inactive

Driver Door Switch Assembly (DDSA)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

8-Digit GM Part Number

ID Information

Numeric

Varies

Battery Voltage

Data

Volts

Varies

Calibration ID

ID Information

Numeric

Varies

Julian Date of Build

ID Information

Numeric

Varies

Memory Recall Switches

Inputs

Idle

Memory 1

Memory 2

Exit

Idle

Year Module Built

ID Information

Numeric

Varies