Body Control Module (BCM) Connector End Views

Body Control Module (BCM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084945 16-Way F Micro-Pack 100 Series (GRY)
Pin	Wire Color	Circuit No.	Function
A1	PNK/WHT	1970	Headlamp Low Beam Relay Control
A2	DK GRN /WHT	1317	Fog Lamp Relay Control (T96)
A3	GRY/BLK	308	Park Lamp Switch On Signal
A4	BLK	28	Horn Relay Control
A5-A7	-	-	Not Used
A8	PPL	1600	Ignition 0 Voltage
B1	WHT	1080	Park Lamp Relay Control
B2	-	-	Not Used
B3	LT BLU	1344	Trunk Release Relay Control
B4	-	-	Not Used
B5	LT GRN /BLK	592	DRL Relay Control
B6	-	-	Not Used
B7	LT GRN /BLK	394	Driver Door Ajar Switch Signal
B8	BRN	341	Ignition 3 Voltage

Body Control Module (BCM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (GRY)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	WHT	682	Door Lock Lock/Unlock Signal
A3	YEL/BLK	1138	DRL Ambient Light Sensor Low Reference
A4	-	-	Not Used
A5	PNK	1200	Headlamp High Beam Signal
A6	BLK	1835	Security System Sensor Low Reference
A7	BLK/WHT	1576	Trunk Release Switch Signal
A8	PPL	16	Turn Signal Flasher Signal
A9	LT BLU	1134	Park Brake Switch Signal
A10-A11	-	-	Not Used
A12	PNK	849	Brake Fluid Level Sensor Signal
B1	ORN	1732	Courtesy Lamps Supply Voltage
B2	LT GRN /BLK	1137	DRL Ambient Light Sensor Signal
B3	-	-	Not Used
B4	DK BLU	1201	Headlamp Low Beam Signal
B5	-	-	Not Used
B6	YEL	1836	Security System Sensor Signal
B7	LT BLU /BLK	1322	SPI Serial Data B
B8	BRN	9	Park Lamp Supply Voltage
B9	PNK	439	Ignition 1 Voltage
B10	LT BLU	395	Passenger Door Ajar Switch Signal
B11	BLK/WHT	238	Driver Seat Belt Switch Signal
B12	LT GRN	80	Key In Ignition Switch Signal

Body Control Module (BCM) C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110244 24-Way F Micro-Pack 100 Series (PNK)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	YEL	356	Driver Door Lock Relay Unlock Control
A3	YEL	1321	SPI Serial Data A
A4	ORN	192	Front Fog Lamp Switch Signal (T96)
A5	-	-	Not Used
A6	BLK/WHT	99	Windshield Washer Fluid Level Signal
A7	PNK/BLK	1323	SPI Serial Data Clock
A8	LT BLU	195	Door Lock Control
A9	-	-	Not Used
A10	BLK/WHT	151	Ground
A11	WHT	156	Courtesy Lamp Low Control
A12	ORN	340	Battery Positive Voltage
B1	ORN	1540	Battery Positive Voltage
B2	PPL	1807	Class 2 Serial Data
B3	WHT	194	Door Unlock Control
B4	WHT	1459	Security System Sensor Supply Voltage
B5	-	-	Not Used
B6	YEL/BLK	68	Low Coolant Level Indicator Control
B7	LT GRN	66	A/C Request Signal
B8-B12	-	-	Not Used