HVAC Control Module Connector End View C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		174047-2 20-Way F Hinged Lock (BK)
Pin	Wire Color	Circuit No.	Function
1	BK/WH	151	Ground
2	GY	8	Park Lamp Supply Voltage
3	L-GN	66	A/C Request Signal
4	WH	193	Rear Defogger Relay Control
5	GY	705	5-Volt Reference
6	PU/WH	3361	Defrost Mode Valve Solenoid Control B
7	PU	361	Defrost Mode Valve Solenoid Control A
8	PK/WH	1648	Recirculation Door Control A
9	L-GN/BK	1647	Recirculation Door Control B
10	L-BU	292	Rear Defog Switch Signal
11	BN	41	Ignition 3 Voltage
12	BK	407	Low Reference
13	RD	708	Mode Door Position Signal
14	YE/BK	1814	Lower Mode Door Position Signal
15	YE/BK	713	Defrost Mode Valve Position Sensor Signal
16	OG/WH	3362	Upper Mode Valve Solenoid Control B
17	RD	362	Upper Mode Valve Solenoid Control A
18	L-GN/BK	3366	Lower Mode Valve Solenoid Control B
19	L-GN/WH	366	Lower Mode Valve Solenoid Control A
20	YE	60	Blower Motor Low Control - Redundant