For 1990-2009 cars

Table 1: | HVAC Control Module
Table 2: | Instrument Panel Module (IPM)
Table 3: | Driver Door Module (DDM)
Table 4: | Headlamp Control Module
Table 5: | Instrument Panel Cluster (IPC)
Table 6: | Left Rear Door Module (LRDM)
Table 7: | Passenger Door Module (PDM)
Table 8: | Rear Integration Module (RIM)
Table 9: | Right Rear Door Module (RRDM)

#### HVAC Control 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.
Ambient Light Status | Data Display - HVAC - Lighting Data | Dark/Light | Varies
Ambient Light Sensor | Data Display - HVAC - Open/Short Data | V | Varies
Dim Level Requested | Data Display - HVAC - Lighting Data | Percent | Varies
LCD Intensity | Data Display - HVAC - Lighting Data | Percent | Varies

#### Instrument Panel Module (IPM)

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.
Accessory LED Duty Cycle | Data Display - Outputs | Percent | Varies
BPPS High During Learn | Data Display - BPP System Data | No/Yes | NO
BPPS Learned Home Position | Data Display - BPP System Data | V | Varies
BPPS Low During Learn | Data Display - BPP System Data | No/Yes | NO
BPPS Move During Learn | Data Display - BPP System Data | No/Yes | NO
BPP Sensor | Data Display - BPP System Data | Counts | Varies
BPP Sensor Reference | Data Display - BPP System Data | Counts | Varies
BPPS Status | Data Display - BPP System Data | Unlearned/Learned/ Invalid/Undecided | Learned
Calculated Brake Pedal Position | Data Display - BPP System Data | Counts | Varies
Courtesy Lamp Switch | Data Display - Inputs | ON/OFF | OFF
Dimming Pot A/D | Data Display - Inputs | Counts | Varies
Front Fog Lamp Relay Status | Data Display - Outputs | ON/OFF | OFF
Flash To Pass Switch | Data Display - Inputs | Inactive/Active | Inactive
Hazard Lamps | Data Display - Interior Lights | ON/OFF | Off
Hazard Lamp Switch | Data Display - Inputs | Enabled/Disabled | Disabled
Headlamp Switch | Data Display - Inputs | ON/OFF | OFF
Headlamp/Park Lamp Off Switch | Data Display - Inputs | ON/OFF | OFF
High Beam Select Switch | Data Display - Inputs | Inactive/Active | Inactive
High Beam Relay Status | Data Display - Outputs | ON/OFF | OFF
Key Cylinder Halo Lamp | Data Display - Outputs | Percent | Varies
LED Dimming | Data Display - Outputs | Percent | Varies
Low Beam Relay Status | Data Display - Outputs | ON/OFF | OFF
Incandescent Dimming | Data Display - Outputs | Percent | Varies
Learn In Progress | Data Display - BPP System Data | No/Yes | NO
Lights On with Wipers | Data Display - Inputs | ON/OFF | Off
OFF LED Duty Cycle | Data Display - Outputs | Percent | Varies
Park Lamp Relay Status | Data Display - Outputs | ON/OFF | OFF
Parking Brake Switch | Data Display - Inputs | Released/Applied | Released
Park Lamp Switch | Data Display - Inputs | ON/OFF | OFF
Photocell State | Data Display - Exterior Lamps | Day/Night | Day
Smart Beam Status | Data Display - Outputs | Disabled/Enabled | Disabled
Start LED Duty Cycle | Data Display - Outputs | Percent | Varies
Stop Lamp Relay | Data Display - Outputs | Released/Applied | Released
Stop Lamp Status | Data Display - BPP System Data | Off/On | Off
Twilight Enable | Data Display - Exterior Lamps | Enabled/Disabled | Disabled

#### Driver Door Module (DDM)

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.
Door Ajar Switch | Data | Door Closed/Door Ajar | Door Closed
Door Open Switch | Data | Closed/Open | Closed
Door Switch Backlight Command | Data | Percent | Varies
Exterior Courtesy Lamp Command | Data | Percent | Varies
Exterior Courtesy Lamp Status | Data | Off/On | Off
Lock Indicator Command | Data | Percent | Varies
Lock Switch Indicator Command | Data | Off/On | Off

#### Headlamp Control 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.
8-Digit GM Part Number | ECU Identification Information | Number | Varies
Battery Voltage Signal | Data | 9-15 Volts | 12.8 Volts
Component Serial No. 13 | ECU Identification Information | Number | 13-16th Digit
Front Leveling Position | Data | Volts | Varies
Headlamp Leveling Mode | Data | NormalSafe | Normal
Headlamp High Beam Signal | Data | Inactive/Active | Inactive
Julian Date of Build | ECU Identification Information | Number | Varies
Leveling Actuator Command | Data | Counts | Varies
Headlamp Low Beam Signal | Data | Inactive/Active | Inactive
Position Sensor Reference | Data | Volts | Varies
Rear Leveling Position | Data | Volts | Varies
Year Model Built | ECU Identification Information | Number | Varies

#### Instrument Panel Cluster (IPC)

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.
Backlight Dimming | IPC Data | Percent | Varies
Indicator Dimming | IPC Data | Percent | Varies
Pointer Dimming | IPC Data | Percent | Varies
LCD Dimming | IPC Data | Percent | Varies

#### Left Rear Door Module (LRDM)

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.
Door Ajar Switch | Data | Door Closed/Door Ajar | Door Closed
Door Open Switch | Data | Closed/Open | Closed
Door Switch Backlight Command | Data | Percent | Varies

#### Passenger Door Module (PDM)

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.
Door Ajar Switch | Data | Door Closed/Door Ajar | Door Closed
Door Open Switch | Data | Closed/Open | Closed
Door Switch Backlight Command | Data | Percent | Varies
Exterior Courtesy Lamp Command | Data | Percent | Varies
Exterior Courtesy Lamp Status | Data | Off/On | Off
Lock Indicator Command | Data | Percent | Varies
Lock Switch Indicator Command | Data | Off/On | Off

#### Rear Integration Module (RIM)

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.
Ambient Light Status | Lighting Data | Night/Day | Day
Backup Lamp Relay Command | Lighting Data | Off/On | OFF
BPP Circuit Signal | Inputs | Inactive/Active | Inactive
Courtesy Lamp PWM Command | Lighting Data | Percent | Varies
Courtesy Lamp Dimming Status | Lighting Data | Off/On/Fade Off/Fade On | Off
Courtesy Lamp Status | Lighting Data | Invalid/Manual/Manual Defeat/Door Open/Door Closed/Exit/RFA/RFA Theft/SDM/Panic | Manual
Inadvertent Power Command | Lighting Data | Inactive/Active | Inactive
Inadvertent Power Input | Inputs | Inactive/Active | Inactive
LF Turn/Hazard Lamp Command | Lighting Data | Off/On | Off
LR Turn/Hazard Lamp Command | Lighting Data | Off/On | Off
Rear Compartment Lid Ajar | Inputs | Closed/Ajar | Closed
Rear Compartment Lid Release Relay | Outputs | Off/On | OFF
Rear Fog Lamp Relay Command | Lighting Data | Off/On | Off
Reverse Switch | Inputs | Inactive/Active | Inactive
RF Turn/Hazard Lamp Command | Lighting Data | Off/On | Off
RR Turn/Hazard Lamp Command | Lighting Data | Off/On | Off
Stop Lamp Relay Command | Lighting Data | Off/On | Off

#### Right Rear Door Module (RRDM)

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.
Door Ajar Switch | Data | Door Closed/Door Ajar | Door Closed
Door Open Switch | Data | Closed/Open | Closed
Door Switch Backlight Command | Data | Percent | Varies