Body Control System Connector End Views

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Body Control Module (BCM) Connector End View C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (LT GRY)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	WHT	2282	Headlamp Washer Relay Control (w/CE4)
A3	ORN	1140	Battery Positive Voltage
A4	BLK/WHT	1969	Headlamp High Beam Relay Control
A5	PNK/WHT	1970	Headlamp Low Beam Relay Control
A6-A11	-	-	Not Used
A12	WHT	278	Ambient Light Sensor Signal
B1	LT GRN	1037	BCM Class 2 Serial Data
B2	BLK	279	Ambient Light Sensor Low Reference
B3	LT GRN	2270	Rear Window Washer Relay Control
B4	GRY/BLK	2226	Low Reference
B5	GRY	705	5 Volt Reference
B6	WHT	2283	Rear Wiper/Washer Switch Supply Voltage
B7	ORN/BLK	2090	Courtesy Lamps Supply Voltage
B8	LT GRN	1011	Remote Radio Control Signal
B9	GRY	391	Rear Window Wiper Switch Signal
B10	YEL	1836	Security System Sensor Signal
B11	GRY	2521	Right Sunload Sensor Signal
B12	LT BLU/BLK	2519	Left Sunload Sensor Signal

Body Control Module (BCM) Connector End View C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110112 32-Way F Micro-Pack 100 (TAN)
Pin	Wire Color	Circuit No.	Function
E1-E2	-	-	Not Used
E3	LT GRN	80	Key In Ignition Switch Signal
E4	YEL	307	Headlamp Switch Flash to Pass Signal
E5	GRY/BLK	308	Park Lamp Switch Signal
E6	PNK/BLK	109	Hood Ajar Switch Signal (Export Only)
E7	PNK	1348	Headlamp On Indicator Control
E8	BLK	1835	Security System Sensor Low Reference
E9	RED/WHT	812	12 Volt Reference
E10	-	-	Not Used
E11	DK GRN/ WHT	1317	Fog Lamp Relay Control
E12	BLK	28	Horn Relay Control
E13-E16	-	-	Not Used
F1-F2	-	-	Not Used
F3	DK GRN	113	Windshield Wiper Switch Signal 2
F4	DK BLU/ WHT	1495	Courtesy Lamps On Signal
F5	BRN/WHT	1871	Headlamp Washer Switch Signal (w/CE4)
F6	ORN	192	Front Fog Lamp Switch Signal
F7	LT BLU	187	Rear Fog Lamp Switch Signal
F8	-	-	Not Used
F9	WHT	103	Headlamp Switch Headlamps On Signal
F10	LT GRN	11	Headlamp High Beam Supply Voltage
F11	PPL	328	Interior Lamp Defeat Switch Signal
F12-F13	-	-	Not Used
F14	YEL	710	Class 2 Serial Data
F15-F16	-	-	Not Used

Body Control Module (BCM) Connector End View C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15077187 40-Way Flat Wire
Pin	Wire Color	Circuit No.	Function
A1	-	-	Battery Positive Voltage
A2	-	-	Not Used
A3	-	-	Right Rear Door Ajar Switch Signal
A4	-	-	Park Brake Switch Signal
A5	-	-	Door Lock Relay Control
A6	-	-	Power Window Lockout Left Rear Control
A7	-	-	Not Used
A8	-	-	Left Rear Door Ajar Switch Signal
A9-A10	-	-	Not Used
A11	-	-	Ground
A12	-	-	RAP Relay Supply Voltage
A13	-	-	Door Unlock Relay Control
A14	-	-	Park Lamp Relay Control
A15-A17	-	-	Not Used
A18	-	-	Ignition 0 Voltage
A19	-	-	Battery Positive Voltage
A20	-	-	Ignition 3 Voltage
B1	-	-	Instrument Panel Lamps Dimming Control
B2	-	-	Instrument Panel Lamps Dimming Control
B3	-	-	Courtesy Lamp Supply Voltage
B4	-	-	Battery Positive Voltage
B5	-	-	Power Window Switch Right Rear Up Signal
B6	-	-	Power Window Lockout Right Rear Control
B7	-	-	Power Window Switch Right Rear Down Signal
B8	-	-	Power Window Switch Left Rear Up Signal
B9	-	-	Power Window Switch Left Rear Down Signal
B10	-	-	Not Used
B11	-	-	Ground
B12	-	-	Backup Lamp Supply Voltage
B13	-	-	Battery Positive Voltage
B14	-	-	LED Dimming Supply
B15	-	-	Accessory Voltage
B16	-	-	Not Used
B17	-	-	Battery Positive Voltage
B18	-	-	Courtesy Lamps Supply Voltage
B19	-	-	Rear Fog Lamp Relay and Indicator Control
B20	-	-	Not Used