GM Service Manual Online
For 1990-2009 cars only
Table 1: BCM Scan Tool Data List
Table 2: IPC Scan Tool Data List
Table 3: LDCM Scan Tool Data List
Table 4: RDCM Scan Tool Data List

BCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On and Engine Off / Doors, Hatch or Trunk, and Hood Closed / No Switches On / Vehicle in Park or Neutral

PRNDL Illumination

Data

0-100%

Varies with Dimming Level

HVAC Bulb Illumination

Data

0-100%

Varies with Dimming Level

Connsole Switch Illumination

Data

0-100%

Varies with Dimming Level

Fog Light Switch Illumination

Data

0-100%

Varies with Dimming Level

DRL Ambient Light Sensor

Data

Volts

Varies with Ambient Light Level

Inadvertent Load Monitor

Input Data 1

Active/Inactive

Active

Headlamp Off Switch

Input Data 1

Active/Inactive

Active

Front Fog Light Switch

Input Data 1

Active/Inactive

Inactive

Rear Fog Light Switch

Input Data 1

Active/Inactive

Inactive

Right Turn Monitor

Input Data 1

Active/Inactive

Inactive

Right Turn Signal Relay

Input Data 1

Active/Inactive

Inactive

Left Turn Monitor

Input Data 1

Active/Inactive

Inactive

Left Turn Signal Relay

Input Data 1

Active/Inactive

Inactive

Backup Light Request

Input Data 1

Active/Inactive

Inactive

Driver Door Ajar Switch

Input Data 2

Open/Closed

Closed

Passenger Door Ajar Switch

Input Data 2

Open/Closed

Closed

IPC Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On and Engine Off / Doors, Hatch or Trunk, and Hood Closed / No Switches On / Vehicle in Park or Neutral

Switch Dimming

Data 2

Counts

0-255

Ambient Light Sensor

Data 2

Counts

0-255

High Beam Lamp

Inputs

On/Off

Off

Head Lamp State

Inputs

On/Off

Off

Courtesy Switch

Inputs

Active/Inactive

Inactive

Left Turn Signal

Inputs

On/Off

Off

Right Turn Signal

Inputs

On/Off

Off

LDCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On and Engine Off / Doors, Hatch or Trunk, and Hood Closed / No Switches On / Vehicle in Park or Neutral

Door Switch Pad Illumination

Data

0-100%

Varies with Dimming Level

Door Ajar

Inputs

Closed/Ajar

Closed

RDCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On and Engine Off / Doors, Hatch or Trunk, and Hood Closed / No Switches On / Vehicle in Park or Neutral

Door Switch Pad Illumination

Data

0-100%

Varies with Dimming Level

Door Ajar

Inputs

Closed/Ajar

Closed