GM Service Manual Online
For 1990-2009 cars only
Table 1: DIM
Table 2: IPM
Table 3: RIM

DIM

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF

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

A/C Pressure

A/C Information

PSI

varies

Battery Voltage

Data

Volts

12 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

Control Head (desired)

A/C Information

A/C/On/Off

A/C/Off

Control Power

Outputs

On/Off

Off

Daytime Running Lamp

Outputs

On/Off

Off

Evaporator Temp.

A/C Information

Fahrenheit

varies

Evaporator Temp Status

A/C Information

OK

OK

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 Output

Outputs

On/Off

Off

Hood Jamb Switch

Inputs

On/Off

Off

Horn (Except SWC)

Outputs

On/Off

Off

Ign. Accessory

Inputs

Active/Inactive

Active

Ignition Crank

Inputs

Active/Inactive

Inactive

Ign. Run

Inputs

Active/Inactive

Active

Ignition Switch

Inputs

Off/Acc/Run/Crank

Run

Ign.Unlock

Inputs

Active/Inactive

Active

Incandescent Dim #1

Outputs

%

varies

Julian Date of Build

Module Information 1

Numeric

varies

Lights On with Wipers

Inputs

On/Off

Off

Low 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

On

Pressure Status

A/C Information

Normal/Low

Normal

Prom ID

Module Information 1

Numeric

varies

Reverse Lockout Drive

Outputs

On/Off

Off

Run/Crank

Inputs

On/Off

On

Steering Wheel Controls A/D

Inputs

Counts

varies

Temperature Status

A/C Information

OK

OK

Theft Lighting

Outputs

On/Off

Off

Year Module Built

Module Information 1

Numeric

varies

IPM

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF

8 Digit GM Part Number

Module Information

Numeric

Varies

A/C Requested

HVAC System Data

Yes/No

No

Air Inlet Dr Actual

HVAC Door Positions

Counts

Varies

Air Inlet Dr Commanded

HVAC Door Positions

Counts

Varies

Calibration ID

Module Information

Numeric

Varies

Commanded Blower

HVAC System Data

Percent

Varies

Component Serial

Module Information

Numeric

Varies

Coolant Temperature

HVAC System Data

Fahrenheit

Varies

Driver AC Duct Temp

HVAC Sensors

Fahrenheit

Varies

Driver Htr. Duct Temp.

HVAC Sensors

Fahrenheit

Varies

Driver Program Number

HVAC System Data

Numeric

Varies

Driver Solar

HVAC Sensors

Counts

Varies

Front Fog Lamp Switch

Non-HVAC Data

On/Off

Off

Fuel Door Release Sw.

Non-HVAC Data

On/Off

Off

Htr./Def./A/C Dr. Actual

HVAC Door Positions

Counts

Varies

Htr./Def./A/C Dr. Commanded

HVAC Door Positions

Counts

Varies

Ign 3 Input

Non-HVAC Data

Active/Inactive

Active

Ignition Counter

Non-HVAC Data

Numeric

Varies

Inside Air Temp

HVAC Sensors

Fahrenheit

Varies

Inside Air Temp

Open/Short Data

Counts

Varies

Interior Dim Pot

Open/Short Data

Counts

Varies

Interior Lamp Switch

Non-HVAC Data

On/Off

Off

Julian Date of Build

Module Information

Numeric

Varies

Key In Ignition

Non-HVAC Data

Yes/No

Yes

Left AC Duct Temp

Open/Short Data

Counts

Varies

Left Htr. Duct Temp.

Open/Short Data

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

Load Reduction Active

HVAC System Data

Yes/No

No

Max Air Inlet Dr Pos

HVAC Door Calibrations

Counts

Varies

Max. Htr./Def./A/C Dr.

HVAC Door Calibrations

Counts

Varies

Max Left Temp Dr Pos

HVAC Door Calibrations

Counts

Varies

Max Right Temp Dr Pos

HVAC Door Calibrations

Counts

Varies

Min Air Inlet Dr Pos

HVAC Door Calibrations

Counts

Varies

Min. Htr./Def./A/C Dr.

HVAC Door Calibrations

Counts

Varies

Min Left Temp Dr Pos

HVAC Door Calibrations

Counts

Varies

Min Right Temp Dr Pos

HVAC Door Calibrations

Counts

Varies

Outside Air Temp

HVAC Sensors

Fahrenheit

Varies

Outside Air Temp

Open/Short Data

Counts

Varies

Passenger AC Duct Temp

HVAC Sensors

Fahrenheit

Varies

Passenger Htr. Duct Temp.

HVAC Sensors

Counts

Varies

Passenger Program Number

HVAC System Data

Numeric

Varies

Passenger Solar

HVAC Sensors

Counts

Varies

Prom ID

Module Information

Numeric

Varies

Rear Fog Lamp Switch

Non-HVAC Data

On/Off

Off

Right AC Duct Temp

Open/Short Data

Counts

Varies

Right Htr. Duct Temp.

Open/Short Data

Counts

Varies

Right Solar Sensor

Open/Short Data

Counts

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

On/Off

On

System Program Number

HVAC System Data

Numeric

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

0

Year Module Built

Module Information

Numeric

Varies

RIM

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF

8-Digit GM Part Number

Module Information 2

numeric

varies

Battery Reconnect

Theft Information

On/Off

Off

Battery Voltage

Data

Volts

varies

Brake to Shift Relay

Outputs

On/Off

On

Calibration ID

Module Information 1

numeric

varies

Cigar Lighter Relay

Outputs

On/Off

On

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

CTD State

Theft Information

Ignition 1/Ignition & Door

Ignition 1

Driver Door Jamb Sw.

Theft Information

On/Off

Off

Dr. Rear Heated Seats

Outputs

On/Off

Off

Front Courtesy Lamp Relay

Outputs

On/Off

Off

Fuel Door Rel. Output

Outputs

On/Off

Off

Heated Seats Inhibit

Outputs

Inhibit/Off

Off

Heated Seats Status

Inputs

Inhibit/Off

Off

Hood Ajar Switch

Theft Information

Active/Inactive

Inactive

Ign. Crank/Run

Inputs

Active/Inactive

Active

Ignition Cycle Counter

Data

numeric

varies

Inadvertent Power Input

Inputs

Active/Inactive

Inactive

Inadvertent Power Relay

Outputs

On/Off

On

Interior Lighting Relay

Outputs

On/Off

On

Julian Date of Build

Module Information 1

numeric

varies

Left Rear Door Jamb Sw.

Theft Information

On/Off

Off

Loadshed Lvl.1 Heated Seats

Outputs

Disabled/Enabled

Disabled

Loadshed Lvl.1 R. Blower

Outputs

Disabled/Enabled

Disabled

Loadshed Lvl.1 R. Defog.

Outputs

Disabled/Enabled

Disabled

Loadshed Lvl.2 R. Blower

Outputs

Disabled/Enabled

Disabled

Loadshed Lvl.2 R. Defog.

Outputs

Disabled/Enabled

Disabled

Loadshed Lvl.2 Heated Seats

Outputs

Disabled/Enabled

Disabled

Park Brake Relay - A

Outputs

On/Off

Off

Park Brake Relay - B

Outputs

On/Off

Off

Pass. Door Jamb Sw.

Theft Information

On/Off

Off

Pass. Rear Heated Seats

Outputs

On/Off

Off

Power Mode Change

Theft Information

On/Off

Off

Prom ID

Module Information 1

numeric

varies

RAP Output

Outputs

On/Off

Off

Rear Defog Relay

Outputs

On/Off

Off

Rear Blower Control

Outputs

On/Off

On

Rear Courtesy Lamp Relay

Outputs

On/Off

Off

Rear Fog Output

Outputs

On/Off

Off

Reverse Relay Output

Outputs

On/Off

Off

Rt. Rear Door Jamb Sw.

Theft Information

On/Off

Off

Trunk Ajar Switch

Inputs

Open/Closed

Closed

Trunk Ajar Switch

Theft Information

On/Off

Off

Trunk Disarm Switch

Inputs

OK

OK

Trunk Release Output

Outputs

On/Off

Off

Year Module Built

Module Information 1

numeric

varies