GM Service Manual Online
For 1990-2009 cars only
Table 1: Dash Integration Module (DIM)
Table 2: Instrument Panel Integration Module (IPM)
Table 3: PCM Scan Tool Data List
Table 4: Rear Climate Control Panel Scan Tool Data List

Use the Scan Tool Data Display Values and Definitions Information in order to assist in diagnosing the Instrument Panel Integration Module (IPM) problems. Compare the vehicles actual scan tool data with the typical data display value table information. Use the data information in order to aid in understanding the nature of the problem when the vehicle does not match with the typical data display values.

The scan tool data values were taken from a known good vehicle under the following conditions:

    • The ignition switch is in the ON position.
    • The engine is running at idle.
    • The vehicle is in PARK.
    • The doors are closed.
    • The windows are closed.
    • The A/C is ON.
    • The ambient air temperatures are at 22-27°C (70-80°F).

Dash Integration Module (DIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Driver seat belt buckled

8-Digit GM Part Number

Module Information 2

Numeric

varies

A/C Clutch (Actual)

A/C Information

On/Off

Off

A/C Clutch (Desired)

A/C Information

On/Off

Off

Battery Saver - History

Data

Active/Inactive

Inactive

Battery Voltage

Data

Volts

12.8 V

Calibration ID

Module Information 1

Numeric

varies

Clutch Voltage

A/C Information

Normal/Low

Normal

Component Serial # 8-11

Module Information 2

Numeric

varies

Component Serial # 12

Module Information 2

Numeric

varies

Component Serial # 13-16

Module Information 2

Numeric

varies

Component Serial # 17-18

Module Information 2

Numeric

varies

Control Head (Desired)

A/C Information

A/C Off/ A/C On

A/C Off

Control Power

Outputs

On/Off

Off

Coolant Temperature

Data

°C/°F

varies

Daytime Running Lamp

Outputs

On/Off

Off

Evaporator Temp

A/C Information

°C/°F

varies

Evaporator Temp Status

A/C Information

Cold/OK

OK

Flash to Pass Switch

Inputs

On/Off

Off

Front Foglamp Relay

Outputs

On/Off

Off

Head Lamp Switch

Inputs

On/Off

Off

High Beam Output (Flash to Pass)

Outputs

On/Off

Off

High Beam Switch/Relay

Inputs

On/Off

Off

Hood Jamb Switch

Inputs

On/Off

Off

Horn (Except SWC)

Outputs

On/Off

Off

Ignition Accessory

Inputs

Active/Inactive

Inactive

Ignition 1

Inputs

Active/Inactive

Active

Ignition 3

Inputs

Active Inactive

Active

Ignition Switch

Inputs

RAP/ RAP_Unlock/ Accy/ Run/ Crank

Run

Ignition Unlock

Inputs

Active/Inactive

Active

Incandescent Dim #1

Outputs

%

0%

Interior Temp. Sensor Fan

Outputs

On/Off

Off

Julian Date of Build

Module Information 1

Numeric

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

Pressure Status

A/C Information

Low/Normal/High

Normal

Prom ID

Module Information 1

Numeric

varies

Reverse Lockout Drive

Outputs

On/Off

Off

Steering Wheel Controls A/D

Inputs

Counts

varies

Steering Wheel Control Feed Voltage

Data

Volts

12.0 Volts

Temperature Status

A/C Information

OK/Hot

OK

Theft Lighting

Outputs

On/Off

Off

Trans Fluid Temp

Data

°C/°F

170°F

Vehicle Speed

Data

Mph/Kmh

varies

Wiper Switch

Inputs

On/Off

Off

Year Module Built

Module Information 1

Year

varies


Instrument Panel Integration Module (IPM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Driver seat belt buckled

8-Digit GM Part Number

Module Information

Numeric

varies

A/C Requested

HVAC System Data

Yes/No

Yes

Air Inlet Cal Status

HVAC Door Calibrations

Cal OK/Low req/High req

Cal OK

Air Inlet Dr Range

HVAC Door Calibrations

Pulses

varies

Air Inlet Dr Actual

HVAC Door Positions

Counts

varies

Air Inlet Dr Commanded

HVAC Door Positions

Counts

varies

Calibration ID

Module Information

Numeric

varies

Command Blower

HVAC System Data

%

varies

Component Serial Number

Module Information

Numeric

varies

Coolant Temperature

HVAC System Data

°C/°F

varies

Door Move Counter

HVAC Door Calibrations

Pulses

varies

Front Fog Lamp Switch

Non-HVAC Data

On/Off

Off

Fuel Door Release Sw

Non-HVAC Data

On/Off

Off

Hazard Lamp Switch

Non-HVAC Data

On/Off

Off

Htr./Def./AC Door Cal Status

HVAC Door Calibrations

Cal OK/High req/Low req

Cal OK

Htr/Def/AC Door Range

HVAC Door Calibrations

Pulses

varies

Htr./Def./AC Dr Actual

HVAC Door Positions

Counts

varies

Htr./Def./AC Dr Commanded

HVAC Door Positions

Counts

varies

Htr./Def./AC Temp Door Status

HVAC Door Calibrations

Cal OK/High req/Low req

Cal OK

HUD Dimming

Non-HVAC Data

On/Off

Off

Ignition 3 Input

Non-HVAC Data

Active/Inactive

Active

Ignition Counter

Non-HVAC Data

Counts

varies

Inside Air Temp

HVAC Sensors

°C/°F

varies

Inside Air Temp

Open/Short Data

Counts/volts

varies

Interior Dim Pot

Open/Short Data

Counts

varies

Interior Lamp Switch

Non-HVAC Data

On/Auto

Auto

Julian Date of Build

Module Information

Numeric

varies

Key In Ignition

Non-HVAC Data

Yes/No

Yes

Left AC Duct Temp

HVAC Sensors

°C/°F

varies

Left AC Duct Temp

Open/Short Data

Counts/volts

varies

Left Cal Status

HVAC Door Calibrations

Cal OK/High req/Low req

Cal OK

Left A/C Duct Temp Desired

HVAC Sensors

°C/°F

varies

Left Htr Duct Temp

HVAC Sensors

°C/°F

varies

Left Htr. Duct Temp.

Open/Short Data

Counts/volts

varies

Left Program Number

HVAC System Data

Counts

varies

Left Solar

HVAC Sensors

Counts

varies

Left Solar Sensor

Open/Short Data

Counts

varies

Left Temp Dr Actual

HVAC Door Positions

Counts

varies

Left Temp Dr Commanded

HVAC Door Positions

Counts

varies

Left Temp Dr Range

HVAC Door Calibrations

Pulses

varies

Load Reduction Active

HVAC System Data

Yes/No

No

Outside Air Temp

HVAC Sensors

°C/°F

varies

Outside Air Temp

Open/Short Data

Counts/volts

varies

Prom ID

Module Information

Numeric

varies

Rear Cal Status

HVAC Door Calibrations

Cal OK/High req/Low req

Cal OK

Rear Duct Temp

HVAC Sensors

°C/°F

varies

Rear Duct Temp

Open/Short Data

Counts/volts

varies

Rear Duct Temp Desired

HVAC Sensors

°C/°F

varies

Rear Fog Lamp Switch

Non-HVAC Data

On/Off

Off

Rear Program Number

HVAC System Data

Counts

varies

Rear Temp Dr Range

HVAC Door Calibrations

Pulses

varies

Rear Temp Dr Actual

HVAC Door Positions

Counts

varies

Rear Temp Dr Commanded

HVAC Door Positions

Counts

varies

Right AC Duct Temp

HVAC Sensors

°C/°F

varies

Right AC Duct Temp

Open/Short Data

Counts/volts

varies

Right Cal Status

HVAC Door Calibrations

Cal OK/High req/Low req

Cal OK

Right Duct Temp Desired

HVAC Sensors

°C/°F

varies

Right Htr Duct Temp

HVAC Sensors

°C/°F

varies

Right Htr Duct Temp

Open/Short Data

Counts/volts

varies

Right Program Number

HVAC System Data

Counts

varies

Right Solar

HVAC Sensors

Counts

varies

Right Solar Sensor

Open/Short Data

Counts

varies

Right Temp Dr Range

HVAC Door Calibrations

Pulses

varies

Right Temp Dr Actual

HVAC Door Positions

Counts

varies

Right Temp Dr Commanded

HVAC Door Positions

Counts

varies

Selected Air Mode

HVAC System Data

Auto/Defog/ Upper/ Bi-Level/ Heater/Defrost

Auto

System Program Number

HVAC System Data

Counts

varies

TCS Switch

Non-HVAC Data

On/Off

Off

Trunk Release Switch

Non-HVAC Data

On/Off

Off

Twilight Delay Pot

Open/Short Data

Counts

varies

Twilight Photocell

Open/Short Data

Counts

varies

Vehicle Speed

HVAC System Data

Mph/Kmh

varies

Year Module Built

Module Information

Year

2001


PCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)

A/C Relay

Engine Data 2

On/Off

On


Rear Climate Control Panel Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)

8 Digit GM Part Number

Module Information

8 digit alphanumeric

25687287

Auto Mode (front)

HVAC System Data

A/C/Bi-Level/Heater/Off

varies

Calibration ID

Module Information

4 digit numeric

0404

Component Serial #13-16

Module Information

4 digit numeric

0279

Component Serial #17-18

Module Information

2 digit numeric

28

Fan High

Outputs

Active/Inactive

varies

Fan Low

Outputs

Active/Inactive

varies

Fan Medium

Outputs

Active/Inactive

varies

Fan Medium High

Outputs

Active/Inactive

varies

Julian Date of Build

Module Information

3 digit numeric

varies

Mode Dr. Commanded

Outouts

Counts

0-255

PROM ID

Module Information

4 digit numeric

0807

Rear Blower

HVAC System Data

RAM Air/High/Med. High/Medium/Low

varies

Rear Mode

HVAC System Data

A/C/ Bi-Level/ Heater/ Auto/ Off

varies

Rear Temp Offset

HVAC System Data

-4 to +4

varies

Year Module Built

Module Information

4 digit numeric

1999