GM Service Manual Online
For 1990-2009 cars only
Table 1: Memory Seat Module (MSM)
Table 2: Memory Mirror Module (MMM)

Memory Seat Module (MSM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, with the Engine OFF

Battery Voltage

Inputs/Outputs

Volts

Varies

Recline Switch

Inputs/Outputs

Forward/Back/Inactive

Inactive

Recline Motor

Inputs/Outputs

Forward/Back/Inactive

Inactive

Horizontal Position Switch

Inputs/Outputs

Forward/Back/Inactive

Inactive

Horizontal Motor

Inputs/Outputs

Forward/Back/Inactive

Inactive

Rear Vertical Position Switch

Inputs/Outputs

Up/Down/Inactive

Inactive

Rear Vertical Motor

Inputs/Outputs

Up/Down/Inactive

Inactive

Front Vertical Position Switch

Inputs/Outputs

Up/Down/Inactive

Inactive

Front Vertical Motor

Inputs/Outputs

Up/Down/Inactive

Inactive

Horizontal Position

Sensor Data

Pulses

Varies

Front Vertical Position

Sensor Data

Pulses

Varies

Rear Vertical Position

Sensor Data

Pulses

Varies

Recline Position

Sensor Data

Counts

Varies

Memory 1 Recline Value

Memory Data

Counts

Varies

Memory 2 Recline Value

Memory Data

Counts

Varies

Memory 1 Horizontal Value

Memory Data

Pulses

Varies

Memory 2 Horizontal Value

Memory Data

Pulses

Varies

Memory 1 Rear Vertical Value

Memory Data

Pulses

Varies

Memory 2 Rear Vertical Value

Memory Data

Pulses

Varies

Memory 1 Front Vertical Value

Memory Data

Pulses

Varies

Memory 2 Front Vertical Value

Memory Data

Pulses

Varies

Julian Date of Build

Module Information 1

Numeric

Varies

8 Digit GM Part Number

Module Information 1

Numeric

Varies

Year Module Built

Module Information 1

Numeric

Varies

Manufacture Enable Counter

Module Information 2

0-255

0

Software Revision Number

Module Information 2

Two Letters

Varies

Software Part Number

Module Information 2

Numeric

Varies

Memory Mirror Module (MMM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, with the Engine OFF

Memory Recall Switch

Inputs

Memory 1/Memory 2/Exit/Idle

Idle