HVAC Control Module Connector End View

HVAC Control Module - Auxiliary C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084945 16-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A1	GY	2821	5-Volt Reference
A2	D-BU	5518	Auxiliary Inside Air Temperature Sensor Signal
A3	TN	517	Upper Auxiliary Air Temperature Sensor Signal
A4	BN	5517	Low Reference
A5	OG	2930	Auxiliary Front Air Temperature Switch Signal
A6	WH	454	Auxiliary Front Mode Switch Signal
A7-A8	-	-	Not Used
B1	D-BU	5516	Inside Air Temperature Sensor Assembly Control
B2	PU/WH	760	Auxiliary Front Blower Motor Switch Signal
B3-B5	-	-	Not Used
B6	BK	516	Low Reference
B7	YE	2933	Ground
B8	-	-	Not Used

HVAC Control Module - Auxiliary C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12092632 16-Way F Micro-Pack 100 Series (RD)
Pin	Wire Color	Circuit No.	Function
A1	D-BU	1646	Auxiliary Air Temperature Door Position Signal
A2	YE/BK	1814	Auxiliary Mode Door Position Signal
A3	-	-	Not Used
A4	BK	1450	Ground
A5	WH/BK	1236	Auxiliary Air Temperature Door Control
A6	WH	454	Auxiliary Front Mode Switch Signal
A7	OG	3140	Battery Positive Voltage
A8	GY	2289	Rear HVAC/Audio Class 2 Serial Data
B1	GY	598	5-Volt Reference
B2	GY	2599	5-Volt Reference
B3	YE	1791	Low Reference
B4	GY/BK	1798	Low Reference
B5	BK	520	Lower Auxiliary Air Temperature Sensor Signal
B6	PU	374	Auxiliary Blower Motor Speed Control
B7	BK	518	Low Reference
B8	-	-	Not Used

HVAC Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110206 24-Way F Micro-Pack 100 Series (L-BU)
Pin	Wire Color	Circuit No.	Function
A1	D-GN	1614	Recirculation Door Control
A2	D-BU	1646	Right Air Temperature Door Position Signal
A3	L-BU	733	Left Air Temperature Door Position Signal
A4	-	-	Not Used
A5	L-GN	2275	Mode Door Position Signal
A6	-	-	Not Used
A7	BN/WH	230	Instrument Panel Lamps Dimming Control
A8	BK/WH	1851	Ground
A9-A11	-	-	Not Used
A12	D-BU	204	A/C Low Pressure Sensor Signal
B1	WH/BK	1236	Right Air Temperature Door Control
B2	D-BU	1199	Left Air Temperature Door Control
B3	-	-	Not Used
B4	TN	2273	Mode Door Control
B5	BN	341	Ignition 3 Voltage
B6	YE	1791	Low Reference
B7	OG	4340	Battery Positive Voltage
B8	L-BU/BK	1688	5-Volt Reference
B9	BK	1050	Ground
B10	-	-	Not Used
B11	WH	1038	HVAC Class 2 Serial Data
B12	-	-	Not Used

HVAC Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15336594 12-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A	D-GN	734	Inside Air Temperature Sensor Signal
B	L-GN/BK	735	Ambient Air Temperature Sensor Signal
C	WH	2338	Upper Left Air Temperature Sensor Signal
D	GY	2336	Upper Right Air Temperature Sensor Signal
E	WH/BK	2339	Lower Left Air Temperature Sensor Signal
F	GY/BK	2337	Lower Right Air Temperature Sensor Signal
G	PU	1838	Recirculation Door Position Signal
H-J	-	-	Not Used
K	BN	718	Low Reference
L	WH/BK	5515	Inside Air Temperature Sensor Assembly Control
M	PU/WH	760	Blower Motor Speed Control