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HVAC Control Module Connector End Views

HVAC Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		OEM: 15416970 Service: See Catalog 16-Way F Micro 64 Modular (BK)
Pin	Wire Color	Circuit No.	Function
1	L-GN	2275	Mode 1 Valve Position Sensor Signal
2-3	-	-	Not Used
4	L-BU/BK	1688	5-Volt Reference
5	L-GN/BK	1647	Open Recirculation Door Control
6	PK/WH	1648	Close Recirculation Door Control
7	PK	339	Run/Crank Ignition 1 Voltage
8	PK	339	Run/Crank Ignition 1 Voltage
9	D-BU	1646	Passenger Air Temperature Door Position Signal
10	-	-	Not Used
11	D-GN	71	Off Blower Motor Control
12	L-BU/BK	1688	5-Volt Reference
13	WH/BK	1236	Passenger Air Temperature Door Control
14	TN	2273	Mode Door Control
15	BK/WH	550	Ground
16	BK/WH	550	Ground

HVAC Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		OEM: 15406141 Service: See Catalog 8-Way F Micro 64 (BK)
Pin	Wire Color	Circuit No.	Function
A1	PK	339	Run/Crank Ignition 1 Voltage
A2	GY	8	Instrument Panel Lamp Supply Voltage (1)
A3	-	-	Not Used
A4	RD/WH	1540	Battery Positive Voltage
A5	BK	550	Ground
A6	L-GN	66	A/C Request Signal (C67)
A7	WH	193	Rear Defog Relay Control
A8	L-BU	292	Rear Defog Switch Signal

HVAC Control Module C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		OEM: 12064998 Service: See Catalog 8-Way F Metri-Pack 280 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	D-GN	71	Off Blower Motor Control
B	BK	550	Ground
C-D	-	-	Not Used
E	OG	52	High Blower Motor Control
F	L-BU	72	Medium 2 Blower Motor Control
G	TN	63	Medium Blower Motor Control (1)
H	YE	60	Low Blower Motor Control