GM Service Manual Online
For 1990-2009 cars only
Table 1: Memory Seat Module (MSM)
Table 2: Door Module(s)
Table 3: Driver Door Switch Assembly (DDSA)

Memory Seat Module (MSM)

Ignition ON, with the Engine OFF

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

B+

Current

Data

Amps

0.5-8.5

Seat Lumbar Forward

Seat Lumbar Backward

Seat Lumbar Up

Seat Lumbar Down

Seat Front Up

Seat Front Down

Seat Rear Up

Seat Rear Down

Seat Forward

Seat Backward

Seat Recline Forward

Seat Recline Backward

Belt Tower Up

Belt Tower Down

Inputs and Outputs

Active / Inactive

Inactive

Front Vertical Sensor

Rear Vertical Sensor

Horizontal Sensor

Recline Sensor

Sensor Data 1

Count A/D / Volts

0.0-255 / 0.0-5.0

Lumbar Vertical Sensor

Lumbar Horizontal Sensor

Belt Tower Sensor

Sensor Data 2

Count A/D / Volts

0.0-255 / 0.0-5.0

Door Module(s)

Ignition ON/Engine OFF

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

B+

Heated Seat Mode

Inputs / Outputs

OFF / ON

OFF

Heated Seat Temperature

Inputs / Outputs

OFF / ON

OFF

Heated Seat LED

Outputs

Back - High / MED / Low

Idle

Driver Door Switch Assembly (DDSA)

Ignition ON/Engine OFF

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

B+

Memory Recall Switches

Inputs

Memory 1

Memory 2

Exit

Set

Idle