GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

8 Digit GM Part Number: Scan tool displays: part number - Display indicates the part number of the BCM.

Auxiliary Lighting: Scan tool displays: On/Off - Display indicates the state of exterior lighting demand request from the remote function actuator (RFA).

Battery Voltage: Scan tool displays: volts - Display indicates the battery voltage input, 0 -- 30 volts is the operating range.

Calibration ID: Scan tool displays: number - Display indicates the 4 digit calibration ID of the BCM.

Courtesy Switch: Scan tool displays: On/Off - Display indicates the state of the input request from the courtesy lamp switch.

Inadvert. Power Output: Scan tool displays: On/Off - Display indicates the state of interior lamp power feed circuit.

LCM Headlamp Sw. Status: Scan tool displays: On/Off - Display indicates the state of the headlamp switch.

Park Lamp Input: Scan tool displays: On/Off - Display indicates the state of park lamps.

PROM ID: Scan tool displays: number - Display indicates the 4 digit PROM ID of the DDM.

Theater Dimming #1: Scan tool displays: On/Off - Display indicates the state of the interior lamps

Theater Dimming #1: Scan tool displays: On/Off - Display indicates the commanded state interior lamp ground.

Theater Dimming #2: Scan tool displays: On/Off - Display indicates the state of the interior lamps.

Theater Dimming #2: Scan tool displays: On/Off - Display indicates the commanded state interior lamp ground.

Drivers Door Module (DDM)

8 Digit GM Part Number: Scan tool displays: part number - Display indicates the part number of the DDM.

Battery Voltage: Scan tool displays: volts - Display indicates the battery voltage input, 0 -- 30 volts is the operating range.

Calibration ID: Scan tool displays: number - Display indicates the 4 digit calibration ID of the DDM.

Drivers Dome/Buzzer Sw.: Scan tool displays: On/Off - Display indicates the state of the drivers door jamb switch. On indicates the door is open and Off indicates the door is closed.

LR Dome/Buzzer Switch: Scan tool displays: On/Off - Display indicates the state of the left rear door jamb switch. On indicates the door is open and Off indicates the door is closed.

Pass. Dome/Buzzer Sw.: Scan tool displays: On/Off - Display indicates the state of the right front door jamb switch. On indicates the door is open and Off indicates the door is closed.

PROM ID: Scan tool displays: number - Display indicates the 4 digit PROM ID of the DDM.

RR Dome/Buzzer Switch: Scan tool displays: On/Off - Display indicates the state of the right rear door jamb switch. On indicates the door is open and Off indicates the door is closed.

Instrument Panel Cluster (IPC)

8 Digit GM Part Number: Scan tool displays: part number - Display indicates the part number of the IPC.

Battery Voltage: Scan tool displays: volts - Display indicates the battery voltage input, 0 -- 30 volts is the operating range.

High Beam Sw. Input: Scan tool displays: On/Off - Display indicates the state of the headlamp dimmer switch.

Lt. Turning Signal Sw.: Scan tool displays: On/Off - Display indicates the state of the left turn signal switch.

PROM ID: Scan tool displays: number - Display indicates the 4 digit PROM ID of the IPC.

Rt. Turning Signal Sw.: Scan tool displays: On/Off - Display indicates the state of the right turn signal switch.

Serial Number: Scan tool displays: number - Display indicates the serial number of the IPC.

Remote Function Actuator (RFA)

8 Digit GM Part Number: Scan tool displays: part number - Display indicates the part number of the RFA.

Battery Voltage: Scan tool displays: volts - Display indicates the battery voltage input, 0 -- 30 volts is the operating range.

Courtesy Lamp Output: Scan tool displays: On/Off - Display indicates the commanded state of the courtesy lamps.

Exterior Lamp Output: Scan tool displays: On/Off - Display indicates the commanded state of the exterior lights.

Park Lamp Input: Scan tool displays: On/Off - Display indicates the state of the park lamp switch.

Perimeter Lamp Output: Scan tool displays: On/Off - Display indicates the commanded state of the perimeter lights.

Calibration ID: Scan tool displays: number - Display indicates the 4 digit calibration ID of the RFA.

PROM ID: Scan tool displays: number - Display indicates the 4 digit PROM ID of the RFA.