Body Control System Connector End Views

Body Control Module (BCM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084945 16-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit Number	Function
A1	-	-	Not Used
A2	L-GN	1391	Driver Door Unlock Relay Control (w/AU0)
A3	L-BU	195	Door Lock Relay Control (w/AU0)
A4	WH	194	Door Unlock Relay Control (w/AU0)
A5-A6	-	-	Not Used
A7	OG/BK	781	Driver Door Lock Switch Unlock Signal (w/AU0)
A8	RD/BK	780	Driver Door Lock Switch Lock Signal (w/AU0)
B1	-	-	Not Used
B2	D-BU	1201	Headlamp Low Beam Signal
B3	-	-	Not Used
B4	GY	731	EVAP Temperature Sensor Signal
B5	L-GN/BK	1137	DRL Ambient Light Sensor Signal (w/HAA)
B6	YE/BK	1138	DRL Ambient Light Sensor Low Referencel (w/HAA)
B7	-	-	Not Used
B8	L-GN	66	A/C Request Signal

Body Control Module (BCM) C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit Number	Function
A1	-	-	Not Used
A2	L-BU	1134	Park Brake Switch Signal
A3	PK	1200	Headlamp High Beam Signal
A4	-	-	Not Used
A5	PU	333	Brake Fluid Level Switch Signal
A6	BN	96	Windshield Wiper Switch Pulse Delay Signal
A7	-	-	Not Used
A8	PK	94	Windshield Washer Switch Signal
A9	RD	228	Windshield Washer Pump Control
A10	PK	339	Ignition 1 Voltage
A11	L-GN	80	Key In Ignition Switch Signal
A12	BK/WH	746	Passenger Doors Ajar Switch Signal
B1	YE	749	Security Indicator Control
B2	GY/BK	745	Left Front Door Ajar Switch Signal
B3	L-BU	292	Rear Defog Switch Signal
B4	RD/BK	744	Liftgate Ajar Switch Signal
B5	D-GN	392	Rear Window Washer Switch Signal
B6	L-BU	74	Park Lamp Switch Signal (w/ T82/HAA)
B7	OG	192	Fog Lamp Switch Signal (w/ T96)
B8	-	-	Not Used
B9	YE	743	Accessory Voltage
B10	BN	9	Park Lamp Supply Voltage
B11	L-GN	1478	Coolant Level Switch Signal
B12	PU	719	Low Reference

Body Control Module (BCM) C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110244 24-Way F Micro-Pack 100 Series (PK)
Pin	Wire Color	Circuit Number	Function
A1	WH	156	Dome Lamp Control
A2	RD/WH	812	12 Volt Reference
A3	WH	352	Headlamp Relay Coil Supply Voltage(w/ T82/HAA)
A4	YE	317	Fog Lamp Relay Control (w/ T96)
A5	OG/BK	1445	BCM Program Enable Signal
A6	RD	2445	Rear Wiper Relay Control
A7	WH	1080	Park Lamp Relay Control (w/ T82/HAA)
A8	L-GN/BK	592	DRL Relay Control
A9	BN/WH	230	I/P Lamps Dimming Control
A10	PU	1807	Class 2 Serial Data
A11	-	-	Not Used
A12	TN	2501	CAN Low
B1	TN/WH	816	A/T Shift Lock Switch Signal
B2	BK	28	Horn Relay Control
B3	OG/BK	1057	Low Reference
B4	GY	112	Windshield Wiper Switch Signal 1
B5	TN	470	Low Reference
B6	WH	193	Rear Defog Relay Control
B7	YE	1836	Security System Sensor Signal
B8	D-GN	113	Windshield Wiper Switch Signal 2
B9	PU	1807	Class 2 Serial Data
B10	PU	1807	Class 2 Serial Data
B11	-	-	Not Used
B12	TN/WH	2500	CAN High

Body Control Module (BCM) C4 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110626 8-Way F Metri-Pack 280 Series (GY)
Pin	Wire Color	Circuit Number	Function
A	OG	1732	Courtesy Lamps Supply Voltage
B-C	-	-	Not Used
D	OG	2540	Battery Positive Voltage
E	GY	8	I/P Lamps Dimmer Switch Signal
F	BK/WH	151	Ground
G	-	-	Not Used
H	OG	1640	Battery Positive Voltage