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

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

RUN MODE ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Driver Window Motor Command

Data

Idle/Up/Down

Idle

Driver Window Position

Data

Counts

Varies

Window Motor Sensor 1

Data

Active/Inactive

Inactive

Window Motor Sensor 2

Data

Active/Inactive

Inactive

Window Normalization

Data

Yes/No

Yes

Driver Door Switch

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

RUN MODE ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Driver LF Window Switch

Data

Idle/Up/Down/Express Down

Idle

Driver RF Window Switch

Data

Idle/Up/Down/Express Down

Idle

Passenger Door Module (PDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

RUN MODE ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Passenger Window Motor Command

Data

Idle/Up/Down

Idle

Front Psgr. Window Position

Data

Counts

Varies

Front Psgr. Window Switch

Data

Idle/Up/Down/Express Down

Idle

Window Motor Sensor 1

Data

Active/Inactive

Inactive

Window Motor Sensor 2

Data

Active/Inactive

Inactive

Window Normalization

Data

Yes/No

Yes