HVAC Control Module Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110206 24-Way F Micro-Pack 100 Series (LT BLU)
Pin	Wire Color	Circuit No.	Function
A1	BLK	552	Low Reference
A2	-	-	Not Used
A3	WHT	2622	Evaporator Temperature Sensor Signal
A4	LT BLU/BLK	590	Sunload Sensor Signal
A5-A6	-	-	Not Used
A7	GRY/BLK	754	Blower Motor Speed Control
A8	ORN	761	Blower Motor Speed Signal
A9	-	-	Not Used
A10	BLK	150	Ground
A11	BRN	241	Ignition 3 Voltage
A12	ORN	640	Battery Positive Voltage
B1	DK BLU	1646	Right Air Temperature Door Position Signal
B2	LT BLU	733	Left Air Temperature Door Position Signal
B3	YEL/BLK	713	Mode Door Position Signal
B4	GRY	598	5-Volt Reference
B5	WHT/BLK	1236	Right Air Temperature Door Control
B6	DK BLU	1199	Left Air Temperature Door Control
B7	TAN	2273	Mode Door Control
B8	TAN/BLK	2274	Recirculation Door Control
B9	WHT	1038	Class 2 Serial Data
B10	-	-	Not Used
B11	WHT	193	Rear Defog Relay Control
B12	GRY	8	Instrument Panel Lamp Supply Voltage