Body Control Module (BCM) - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	D-BU	1796	Steering Wheel Radio Controls Supply Voltage
A3	TN/BK	254	Rear Door Unlock Relay Control
A4	PK/WH	1970	Headlamp Low Beam Relay Control
A5	D-GN/WH	1317	Fog Lamp Relay Control
A6	GY/BK	255	Rear Door Lock Relay Control
A7	-	-	Not Used
A8	WH	193	Rear Defog Relay Control
A9-A10	-	-	Not Used
A11	RD/WH	812	12-Volt Reference
A12	OG	1140	Battery Positive Voltage
B1	BK/WH	1969	Headlamp High Beam Relay Control
B2	WH	1080	Park Lamp Relay Control
B3	D-BU	1353	RAP Supply Voltage
B4	L-GN/BK	592	DRL Relay Control
B5	PU	359	DRL Off Indicator Control
B5	YE	1977	Rear Fog Lamp Relay Control (Export)
B6	BK/WH	1851	Ground
B7	BK	1835	Security System Sensor Low Reference
B8	PK	1348	Headlamp On Indicator Control
B9	BK	28	Horn Relay Control
B10	WH	1304	Liftgate Lock Relay Control (w/E52)
B11	GY	1056	Dimmer Switch 5-Volt Reference Voltage
B12	L-GN	1037	BCM Class 2 Serial Data