GM Service Manual Online
For 1990-2009 cars only
Table 1: Climate Control Panel
Table 2: Dash Integration Module
Table 3: Driver Door Module
Table 4: Passenger Door Module
Table 5: Left Rear Door Module
Table 6: Right Rear Door Module
Table 7: Instrument Panel Cluster
Table 8: Headlamp Leveling Module --LH
Table 9: Headlamp Leveling Module --RH
Table 10: Powertrain
Table 11: Rear Integration Module

Climate Control Panel

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Photocell

Data Display--Lighting Data

Counts

240 Counts

Photocell Status

Data Display--Lighting Data

Dark/Light

--

Dimming Enable

Data Display--Lighting Data

YES/NO

--

Dimming Level Requested

Data Display--Lighting Data

Percent

--

LCD Intensity

Data Display--Lighting Data

Percent

--

LED Intensity

Data Display--Lighting Data

Percent

--

Dash Integration Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Control Power

Output

ON/OFF

OFF

Courtesy Lamp Switch

Inputs

ON/OFF

OFF

Daytime Running Lamp

Outputs

ON/OFF

OFF

Dimming Pot A/D

Inputs

Counts

220 Counts

Front Fog Lamp Relay

Outputs

ON/OFF

OFF

Front Fog Lamp Switch

Inputs

Idle/Active

Idle

Flash to Pass Switch

Inputs

ON/OFF

OFF

Hazard Lamp Switch

Inputs

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

High/Low Beam Relay

Outputs

ON/OFF

OFF

Incandescent Dimming

Outputs

Percent

0-100%

Lights On With Wipers

Inputs

ON/OFF

OFF

Rear Fog Lamp Switch

Inputs

Idle/Active

Idle

Park Lamp Relay

Outputs

ON/OFF

OFF

Park Lamp Switch

Inputs

ON/OFF

OFF

Theft Lighting

Outputs

ON/OFF

OFF

Twilight Switch

Inputs

ON/OFF

OFF

Driver Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Driver Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Inactive

Passenger Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Pass. Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Inactive

Left Rear Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Left Rear Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Inactive

Right Rear Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Rt. Rear Door Jamb Sw.

Inputs

ON/OFF

OFF

Switch Dimming

Outputs

Active/Inactive

Inactive

Instrument Panel Cluster

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Park Brake Switch

Inputs

ON/OFF

OFF

Left Turn Signal

Inputs

ON/OFF

OFF

Right Turn Signal

Inputs

ON/OFF

OFF

Headlamp Leveling Module --LH

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data Display

Volts

0-25v

Calibrate Module

Special Functions

--

--

Low Beam Input

Data Display

Volts

0-25v

Front Sensor

Data Display

Percent

0-100%

Rear Sensor

Data Display

Percent

0-100%

Stepper Motor Position

Data Display

Counts

0-255

Headlamp Leveling Module --RH

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data Display

Volts

0-25v

Calibrate Module

Special Functions

--

--

Low Beam Input

Data Display

Volts

0-25v

Front Sensor

Data Display

Percent

0-100%

Rear Sensor

Data Display

Percent

0-100%

Stepper Motor Position

Data Display

Counts

0-255

Powertrain

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Current Gear

Data Display/Engine Data Display/Engine Data 1

Park/Reverse/Neutral/1st/2nd/3rd/4th/5th

Park

Stoplamp Pedal Switch

Eng 1, 2 3 , FR, TAC

Applied/Released

Released

Rear Integration Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. All lighting turned OFF. All doors closed.

Battery Voltage

Data

Volts

0-25v

Driver Door Jamb Sw.

CTD Alarm Triggers

ON/OFF

OFF

Inadvertent Power Input

Inputs/Outputs

Active/Inactive

Inactive

Inadvertent Power Relay

Inputs/Outputs

ON/OFF

ON

Left Rear Door Jamb Sw.

CTD Alarm Triggers

ON/OFF

OFF

Overhead Lamps Output

Inputs/Outputs

ON/OFF

OFF

Pass. Door Jamb Sw.

CTD Alarm Triggers

ON/OFF

OFF

Position Lamp Relay

Inputs/Outputs

ON/OFF

OFF

Rear Fog Lamp Relay

Inputs/Outputs

ON/OFF

OFF

Reverse Lamp Relay

Inputs/Outputs

ON/OFF

OFF

Rt. Rear Door Jamb Sw,

CTD Alarm Triggers

ON/OFF

OFF