GM Service Manual Online
For 1990-2009 cars only
Table 1: Driver Door Module (DDM)
Table 2: Driver Door Switch Assembly (DDSA)
Table 3: Left Rear Door Module (LRDM)
Table 4: Passenger Door Module (PDM)
Table 5: Right Rear Door Module (RRDM)

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery power is the only requirement for Module Information, Inputs and Lock Outputs. Key ON is required for window outputs.

8 Digit GM Part Number

ECU Identification Information

Number

Varies

Battery Voltage Signal

Data

9-15 Volts

12.8 Volts

Component Serial No. 13-16

ECU Identification Information

Number

13-16th digit

Deadbolt Actuator Command

Data

Idle/Unlock/Lock/Invalid

Idle

Door Ajar Switch

Data

Door Closed/Door Ajar

Door Closed

Door Cylinder Switch

Data

Idle/Unlock/Lock/Invalid

Idle

Door Open Switch

Data

Closed/Open

Closed

Driver Door Handle

Data

Inactive/Active

Inactive

Driver Mirror Heater

Data

Inactive/Active

Inactive

Driver Mirror Horizontal Position

Data

Volts

Varies

Driver Mirror Vertical Position

Data

Volts

Varies

Driver Mirror Motors Command

Data

Idle/Fold Out/ Fold In/Left/Right/Down/Up

Idle

Door Switch Backlight Command

Data

%

Varies

Exterior Courtesy Lamp Command

Data

%

Varies

Exterior Courtesy Lamp Status

Data

Off/On

Off

Julian Date of Build

ECU Identification Information

Number

Varies

LF Latch Solenoid Command

Data

Inactive/Active

Inactive

Lock Indicator Command

Data

%

Varies

Lock Switch Indicator Command

Data

Off/On

Off

VIN Learned

VIN Information

Yes/No

Yes

VIN Message Received

VIN Information

Yes/No

Yes

Window Motor Command

Data

Idle/Up/Down/Active

Idle

Window Normalization

Data

No/Yes

No

Year Model Built

ECU Identification Information

Number

Varies

Driver Door Switch Assembly (DDSA)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery power is the only requirement for Module Information, Inputs and Lock Outputs. Key ON is required for window outputs.

8 Digit GM Part Number

ECU Identification Information

Number

Varies

Battery Voltage Signal

Data

9-15 Volts

12.8 Volts

Component Serial No. 13-16

ECU Identification Information

Number

13-16th digit

Door Lock Switch

Data

Idle/Lock/Unlock/Invalid

Idle

Driver LF Window Switch

Data

Idle/Up/ Down/Express Up/Express Down/Invalid

Idle

Driver LR Window Switch

Data

Idle/Up/ Down/Express Up/Express Down

Idle

Driver RF Window Switch

Data

Idle/Up/ Down/Express Up/Express Down

Idle

Driver RR Window Switch

Data

Idle/Up/ Down/Express Up/Express Down

Idle

Julian Date of Build

ECU Identification Information

Number

Varies

Mirror Direction Switch

Data

Idle/Up/Down/Left/Right

Idle

Mirror Fold Switch

Data

Inactive/Active

Inactive

Mirror Select Switch

Data

Driver/Off/Passenger

Off

Trunk Release Switch

Data

Inactive/Active

Inactive

Window Lockout Switch Indicator Command

Data

Inactive/Active

Inactive

Window Lockout Switch

Data

Off/On

Off

Year Module Built

ECU Identification Information

Number

Varies

Left Rear Door Module (LRDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery power is the only requirement for Module Information, Inputs and Lock Outputs. Key ON is required for window outputs.

8 Digit GM Part Number

ECU Identification Information

Number

Varies

Battery Voltage Signal

Data

9-15 Volts

12.8 Volts

Component Serial No. 13-16

ECU Identification Information

Number

13-16th digit

Deadbolt Actuator Command

Data

Idle/Unlock/Lock/Invalid

Idle

Door Ajar Switch

Data

Door Closed/Door Ajar

Door Closed

Door Lock Actuator Cmd.

Data

Idle/Lock/Unlock

Idle

Door Open Switch

Data

Closed/Open

Closed

Door Switch Backlight Command

Data

%

Varies

Julian Date of Build

ECU Identification Information

Number

Varies

VIN Learned

VIN Information

Yes/No

Yes

VIN Message Received

VIN Information

Yes/No

Yes

Window Motor Command

Data

Idle/Down/Up/Active

Idle

Window Normalization

Data

No/Yes

No

Window Switch

Data

Idle/Up/Down/Express Up/ExpressDown/Invalid

Idle

Year Module Built

ECU Identification Information

Number

Varies

Passenger Door Module (PDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery power is the only requirement for Module Information, Inputs and Lock Outputs. Key ON is required for window outputs.

8 Digit GM Part Number

ECU Identification Information

Number

Varies

Battery Voltage Signal

Data

9-15 Volts

12.8 Volts

Component Serial No. 13-16

ECU Identification Information

Number

13-16th digit

Deadbolt Actuator Command

Data

Idle/Unlock/Lock/Invalid

Idle

Door Ajar Switch

Data

Door Closed/Door Ajar

Door Closed

Door Lock Switch

Data

Idle/Lock/Unlock/Invalid

Idle

Door Open Switch

Data

Closed/Open

Closed

Door Switch Backlight Command

Data

%

Varies

Exterior Courtesy Lamp Command

Data

%

Varies

Exterior Courtesy Lamp Status

Data

Off/On

Off

Lock Indicator Command

Data

%

Varies

Lock Switch Indicator Command

Data

Off/On

Off

Passenger Door Handle

Data

Inactive/Active

Inactive

Psgr. Mirror Heater

Data

Inactive/Active

Inactive

Psgr. Mirror Horizontal Position

Data

Volts

Varies

Psgr. Mirror Motors Command

Data

Idle/Fold Out/Fold In/Left/Right/Down/up

Idle

Psgr. Mirror Vertical Position

Data

Volts

Varies

Julian Date of Build

ECU Identification Information

Number

Varies

RF Latch Solenoid Command

Data

Inactive/Active

Inactive

VIN Learned

VIN Information

Yes/No

Yes

VIN Message Received

VIN Information

Yes/No

Yes

Window Motor Command

Data

Idle/Down/Up/Active

Idle

Window Switch

Data

Idle/Up/Down/Express Up/ExpressDown/Invalid

Idle

Window Normalization

Data

No/Yes

No

Year Module Built

ECU Identification Information

Number

Varies

Right Rear Door Module (RRDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery power is the only requirement for Module Information, Inputs and Lock Outputs. Key ON is required for window outputs.

8 Digit GM Part Number

ECU Identification Information

Number

Varies

Battery Voltage Signal

Data

9-15 Volts

12.8 Volts

Component Serial No. 13-16

ECU Identification Information

Number

13-16th digit

Deadbolt Actuator Command

Data

Idle/Lock/Unlock/Invalid

Idle

Door Ajar Switch

Data

Door Closed/Door Ajar

Door Closed

Door Lock Actuator Cmd.

Data

Idle/Lock/Unlock/Invalid

Idle

Door Open Switch

Data

Closed/Open

Closed

Door Switch Backlight Command

Data

%

Varies

Julian Date of Build

ECU Identification Information

Number

Varies

VIN Learned

VIN Information

Yes/No

Yes

VIN Message Received

VIN Information

Yes/No

Yes

Window Motor Command

Data

Idle/Down/UP/Active

Idle

Window Normalization

Data

No/Yes

No

Window Switch

Data

Idle/Up/Down/Express Up/ExpressDown/Invalid

Idle

Year Module Built

ECU Identification Information

Number

Varies