HVAC Control Module Connector End Views

HVAC Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A1	RD/WH	440	Battery Supply Voltage
A2	-	-	Not Used
A3	BN	141	Ignition 3 Voltage
A4	D-GN/WH	762	A/C Request Signal
A5-A7	-	-	Not Used
A8	L-BU	292	Rear Defog Switch Signal
A9	-	-	Not Used
A10	L-GN/BK	1647	Recirculation Door Control B
A11	TN	2273	Mode Door Control
A12	D-BU	1199	Temperature Door Control
B1	BN	9	Park Lamp Supply Voltage
B2	-	-	Not Used
B3	GY	8	Instrument Panel Lamps Supply Voltage
B4	-	-	Not Used
B5	BK/WH	651	Ground
B6-B7	-	-	Not Used
B8	TN	683	Rear Defog Indicator Supply Voltage
B9	-	-	Not Used
B10	PK/WH	1648	Recirculation Door Control A
B11	L-GN	2275	Mode Door Position Signal
B12	YE	1791	Low Reference

HVAC Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326924 8-Way F Global Terminal 250 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	OG	52	Blower Motor High Control
B	L-BU	72	Medium 3 Blower Motor Control
C	TN	63	Medium 1 Blower Motor Control
D	YE	60	Blower Motor Low Control
E-F	-	-	Not Used
G	BN	41	Ignition 3 Voltage
H	-	-	Not Used