GM Service Manual Online
For 1990-2009 cars only
Table 1: Dash Integration Module (DIM)
Table 2: Driver Door Module (DDM)
Table 3: Instrument Panel Cluster (IPC)
Table 4: Instrument Panel Module (IPM)
Table 5: Left Rear Door Module (LRDM)
Table 6: Passenger Door Module (FPDM)
Table 7: Right Rear Door Module (RRDM)
Table 8: Rear Integration Module (RIM)

Dash Integration Module (DIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Control Power

Outputs

On/Off

Off

Daytime Running Lamp

Outputs

On/Off

On

Flash to Pass Switch

Inputs

On/Off

Off

Front Fog Lamp Relay

Outputs

On/Off

Off

Head Lamp Switch

Inputs

On/Off

Off

High Beam -- Flash to Pa

Outputs

On/Off

Off

High Beam Switch/Relay

Inputs

On/Off

Off

Incandescent Dim 1

Outputs

%

Varies

Lights On With Wipers

Inputs

On/Off

Off

Low/High Beam Output

Outputs

On/Off

Off

Park Lamp

Inputs

On/Off

Off

Park Lamp Relay Output

Outputs

On/Off

Off

Position Lamp Relay

Outputs

On/Off

Off

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Transmission shift lever in the PARK position/All lighting turned OFF/All doors closed

Driver Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Active

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

LED Dimming

Data

%

Varies

Left Turn Signal

Inputs

On/Off

Off

Right Turn Signal

Inputs

On/Off

Off

VF Dim

Data

%

Varies

Instrument Panel Module (IPM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Ambient Light Sensor

Open/Short Data

Volts

Varies

Front Fog Lamp Switch

Non-HVAC Data

On/Off

Off

Hazard Lamp Switch

Non-HVAC Data

On/Off

Off

Interior Dim Pot

Open/Short Data

Volts

Varies

Interior Lamp Switch

Non-HVAC Data

On/Auto

Auto

Twilight Delay Pot

Open/Short Data

Volts

Varies

Left Rear Door Module (LRDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Transmission shift lever in the PARK position/All lighting turned OFF/All doors closed

Left Rear Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Active

Passenger Door Module (FPDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Transmission shift lever in the PARK position/All lighting turned OFF/All doors closed

Pass. Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Active

Right Rear Door Module (RRDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Transmission shift lever in the PARK position/All lighting turned OFF/All doors closed

Rt. Rear Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Active

Rear Integration Module (RIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Interior Lamp Input

Inputs

On/Off

Off

Interior Lighting Relay

Outputs

On/Off

On

Overhead Lamps Output

Outputs

On/Off

Off

Reverse Lamp Relay

Outputs

On/Off

Off

Trailer Detection Input

Inputs

On/Off

Off