Body Control Module Connector End Views

Body Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160778 24-Way F Micro-Pack 100 Series (BRN)
Pin	Wire Color	Circuit No.	Function
A1	BLK	1850	Ground
A2	ORN	1840	Battery Positive Voltage
A3	WHT	194	Door Unlock Control
A4	LT BLU	195	Door Lock Control
A5-A6	-	-	Not Used
A7	BLK	755	RAP Relay Coil Control
A8	DK BLU	1393	Courtesy Lamp Relay Control
A9	BLK	28	Horn Relay Control
A10	-	-	Not Used
A11	LT GRN/ BLK	592	DRL Relay Control
A12	LT GRN	1037	BCM Class 2 Serial Data
B1	BLK	1850	Ground
B2	PNK	39	Ignition 1 Voltage
B3	RED/WHT	812	12 Volt Reference
B4	ORN	461	GMCM Serial Data
B5	-	-	Not Used
B6	LT BLU	14	Left Turn Signal Lamps Supply Voltage
B7	DK BLU	15	Right Turn Signal Lamps Supply Voltage
B8	-	-	Not Used
B9	BRN	41	Ignition 3 Voltage
B10	LT BLU	1134	Park Brake Switch Signal
B11	BLK/WHT	238	Seat Belt Switch - Left
B12	LT BLU	553	Tow/Haul Switch Signal

Body Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110206 24-Way F Micro-Pack 100 Series (LT BLU)
Pin	Wire Color	Circuit No.	Function
A1	YEL	710	Class 2 Serial Data
A2	ORN/BLK	1057	Low Reference
A3	GRY/BLK	690	Courtesy Lamp Low Control
A4	LT GRN	1391	Driver Door Unlock Relay Control
A5	WHT	1080	Park Lamp Relay Control
A6	LT BLU	1344	Trunk Release Relay Control
A7-A10	-	-	Not Used
A11	WHT	352	Headlamp Relay Coil Supply Voltage
A12	PPL/WHT	1382	LED Dimming Signal
B1	DK GRN/WHT	817	Vehicle Speed Signal
B2	-	-	Not Used
B3	YEL	1836	Security System Sensor Signal
B4	-	-	Not Used
B5	LT GRN/ BLK	1311	High Beam Signal
B6	BRN	9	Park Lamp Supply Voltage
B7-B8	-	-	Not Used
B9	LT GRN	80	Key In Ignition Switch Signal
B10	PNK	775	Side Door Jamb Switch Signal
B11	YEL	656	Lift Gate Courtesy Lamp Control
B12	ORN	1732	Courtesy Lamps Supply Voltage

Body Control Module C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191375 16-Way F Micro-Pack 100 Series (PPL)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	DK BLU/ WHT	1495	Courtesy Lamps On Signal
A3	YEL	307	Headlamp Switch Flash to Pass Signal
A4	GRY	605	5 Volt Reference
A5	GRY	8	Instrument Panel Lamp Supply Voltage - 1
A6	WHT	278	Ambient Light Sensor Signal
A7-A8	-	-	Not Used
B1	-	-	Not Used
B2	ORN	54	Passenger Door Jamb Switch Signal
B3	-	-	Not Used
B4	DK BLU	49	Driver Door Ajar Switch Signal
B5	-	-	Not Used
B6	PPL	328	Interior Lamp Defeat Switch Signal
B7	-	-	Not Used
B8	PPL/WHT	549	Headlamp Switch Headlamps Off Signal