GM Service Manual Online
For 1990-2009 cars only
Table 1: Driver Position Module
Table 2: Door Module(s)
Table 3: Rear Heated Seat Module

Driver Position Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

Battery Voltage Signal

Inputs

Volts

Varies

Current

Inputs

amps

Varies

Driver Seat Front Vertical Sensor

Seat 1 Info

Volts

0-5 Volts

Driver Seat Horizontal Sensor

Seat 1 Info

Volts

0-5 Volts

Driver Seat Rear Vertical Sensor

Seat 1 Info

Volts

0-5 Volts

Driver Seat Recline Sensor

Seat 1 Info

Volts

0-5 Volts

Front Vertical Downward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Front Vertical Upward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Front Vertical Motor Downward

Seat 1 Outputs

Active/Inactive

Inactive

Front Vertical Motor Upward

Seat 1 Outputs

Active/Inactive

Inactive

Horizontal Motor Forward

Seat 1 Outputs

Active/Inactive

Inactive

Horizontal Motor Rearward

Seat 1 Outputs

Active/Inactive

Inactive

Horizontal Forward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Horizontal Rearward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Lumbar Downward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Lumbar Forward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Lumbar Horizontal Position

Memory Data 1

Volts

0-5 Volts

Lumbar Horizontal Position

Memory Data 2

Volts

0-5 Volts

Lumbar Horizontal Sensor

Seat 1 Info

Volts

0-5 Volts

Lumbar Motor Downward

Seat 1 Outputs

Active/Inactive

Inactive

Lumbar Motor Forward

Seat 1 Outputs

Active/Inactive

Inactive

Lumbar Motor Rearward

Seat 1 Outputs

Active/Inactive

Inactive

Lumbar Motor Upward

Seat 1 Outputs

Active/Inactive

Inactive

Lumbar Rearward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Lumbar Upward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Lumbar Vertical Position

Memory Data 1

Volts

0-5 Volts

Lumbar Vertical Position

Memory Data 2

Volts

0-5 Volts

Lumbar Vertical Sensor

Seat 1 Info

Volts

0-5 Volts

Recline Forward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Recline Motor Forward

Seat 1 Outputs

Active/Inactive

Inactive

Recline Motor Rearward

Seat 1 Outputs

Active/Inactive

Inactive

Recline Rearward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Rear Vertical Downward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Rear Vertical Motor Downward

Seat 1 Outputs

Active/Inactive

Inactive

Rear Vertical Motor Upward

Seat 1 Outputs

Active/Inactive

Inactive

Rear Vertical Upward Switch

Seat 1 Inputs

Active/Inactive

Inactive

Seat Horizontal Position

Memory Data 1

Volts

0-5 Volts

Seat Horizontal Position

Memory Data 2

Volts

0-5 Volts

Seat Front Vertical Position

Memory Data 1

Volts

0-5 Volts

Seat Front Vertical Position

Memory Data 2

Volts

0-5 Volts

Seat Rear Vertical Position

Memory Data 1

Volts

0-5 Volts

Seat Rear Vertical Position

Memory Data 2

Volts

0-5 Volts

Seat Recline Position

Memory Data 1

Volts

0-5 Volts

Seat Recline Position

Memory Data 2

Volts

0-5 Volts

Door Module(s)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage Signal

Data

Volts

Varies

Memory Recall Switch

Inputs

Inactive/Memory 1/Memory 2/Exit

Inactive

Seat Back Heat Mode Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Back Heat Mode Sw.

Inputs

Inactive/Active

Inactive

Seat Cool Mode Ind. Cmd

Outputs

OFF/ON

OFF

Seat Cool Mode Switch

Inputs

Inactive/Active

Inactive

Seat Heat High Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Low Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Medium Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Mode Cmd.

Outputs

OFF/ON

OFF

Seat Heat Mode Sw.

Inputs

Inactive/Active

Inactive

Rear Heated Seat Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage Signal

Data

Volts

Varies

Seat Back Heat Mode Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Back Heat Mode Sw.

Inputs

Inactive/Active

Inactive

Seat Cool Mode Ind. Cmd

Outputs

OFF/ON

OFF

Seat Cool Mode Switch

Inputs

Inactive/Active

Inactive

Seat Heat High Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Low Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Medium Ind. Cmd.

Outputs

OFF/ON

OFF

Seat Heat Mode Cmd.

Outputs

OFF/ON

OFF

Seat Heat Mode Sw.

Inputs

Inactive/Active

Inactive