Body Control Module (BCM) Connector End View

Body Control Module (BCM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (L-GY)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	WH	2282	Headlamp Washer Relay Control (CE4)
A3	OG	1140	Battery Positive Voltage
A4	BK/WH	1969	Headlamp High Beam Relay Control
A5	PK/WH	1970	Headlamp Low Beam Relay Control
A6	PK	5363	Incline Sensor Alarm Signal (BAE)
A7-A8	-	-	Not Used
A9	TN	5458	Midgate Overhead Console Switch Up Signal (Z88)
A10-A11	-	-	Not Used
A12	WH	278	Ambient Light Sensor Signal
B1	L-GN	1037	BCM Class 2 Serial Data
B2	BK	279	Ambient Light Sensor Low Reference
B3	L-GN	2270	Rear Window Washer Relay Control
B4	GY/BK	2226	Instrument Panel Lamps Dimmer Switch Low Reference
B5	GY	705	5-Volt Reference
B6	WH	2283	Rear Wiper/Washer Switch Supply Voltage
B7	OG/BK	2090	Courtesy Lamps Supply Voltage
B8	L-GN	1011	Remote Radio Control Signal
B9	GY	391	Rear Window Wiper Switch Signal
B10	YE	1836	Security System Sensor Signal
B11	GY	2521	Right Sunload Sensor Signal
B12	L-BU/BK	2519	Left Sunload Sensor Signal

Body Control Module (BCM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110112 32-Way F Micro-Pack 100 (TN)
Pin	Wire Color	Circuit No.	Function
E1-E2	-	-	Not Used
E3	L-GN	80	Key In Ignition Switch Signal
E4	YE	307	Headlamp Switch Flash to Pass Signal
E5	GY/BK	308	Park Lamp Switch Signal
E6	PK/BK	109	Hood Ajar Switch Signal (UA2)
E7	PK	1348	Headlamp On Indicator Control
E8	BK	1835	Security System Sensor Low Reference
E9	RD/WH	812	12-Volt Reference
E10	-	-	Not Used
E11	DK GN/ WH	1317	Fog Lamp Relay Control (T96)
E12	BK	28	Horn Relay Control
E13	-	-	Not Used
E14	TN	5463	DRL Defeat On Indicator Control
E15-E16	-	-	Not Used
F1-F2	-	-	Not Used
F3	D-GN	113	Windshield Wiper Switch Signal 2
F4	D-BU/WH	1495	Courtesy Lamps On Signal
F5	BN/WH	1871	Headlamp Washer Switch Signal (CE4)
F6	OG	192	Front Fog Lamps Switch Signal (T96)
F7	L-BU	187	Rear Fog Lamps Switch Signal (T79)
F8	L-GN	5462	DRL Defeat Switch Signal
F9	WH	103	Headlamp Switch Headlamps On Signal
F10	L-GN	11	Headlamp High Beam Supply Voltage
F11	PU	328	Interior Lamp Defeat Switch Signal
F12	D-BU	6252	Midgate Ajar Indicator Switch (Z88)
F13	PK	5068	Intrusion Sensor Switch Disable Signal (BAE)
F14	YE	710	Class 2 Serial Data
F15-F16	-	-	Not Used

Body Control Module (BCM) C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15354796 40-Way Flat Wire
Pin	Wire Color	Circuit No.	Function
A1	FW	2140	Battery Positive Voltage
A2	FW	2140	Battery Positive Voltage
A3	FW	748	Right Rear Door Ajar Switch Signal
A4	FW	1134	Park Brake Switch Signal
A5	FW	195	Door Lock Relay Control
A6	FW	2265	Power Window Lockout Left Rear Control
A7	-	-	Not Used
A8	-	747	Left Rear Door Ajar Switch Signal
A9- A10	-	-	Not Used
A11	FW	1350	Ground
A12	FW	1351	RAP Relay Supply Voltage
A13	FW	194	Door Unlock Relay Control
A14	FW	1080	Park Lamp Relay Control
A15	FW	5168	Power Sounder Enable Signal (BAE)
A16	FW	5204	Intrusion Sensor Data Signal
A17	-	-	Not Used
A18	FW	1390	Ignition 0 Voltage
A19	FW	39	Ignition 1 Voltage
A20	FW	541	Ignition 3 Voltage
B1	FW	230	Instrument Panel Lamps Dimming Control
B2	FW	230	Instrument Panel Lamps Dimming Control
B3	FW	690	Courtesy Lamp Supply Voltage
B4	FW	2240	Battery Positive Voltage
B5	FW	1186	Power Window Switch Right Rear Up Signal
B6	FW	2266	Power Window Lockout Right Rear Control
B7	FW	1188	Power Window Switch Right Rear Down Signal
B8	FW	1185	Power Window Switch Left Rear Up Signal
B9	FW	1187	Power Window Switch Left Rear Down Signal
B10	-	-	Not Used
B11	FW	1350	Ground
B12	FW	24	Backup Lamp Supply Voltage
B13	FW	4440	Battery Positive Voltage
B14	FW	1382	LED Dimming Signal
B15	FW	543	Accessory Voltage
B16	-	-	Not Used
B17	FW	4040	Battery Positive Voltage
B18	FW	1732	Courtesy Lamps Supply Voltage
B19	FW	1977	Rear Fog Lamp Relay and Indicator Control
B20	FW	5362	Incline Sensor Alarm On Signal (BAE)