HVAC Control Module Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110206 24-Way F Metri-Pack 100 Series (LT BLU)
Pin	Wire Color	Circuit No.	Function
A1	DK GRN	762	HVAC Class 2 Serial Data
A2	ORN	2440	Battery Positive Voltage
A3	-	-	Not Used
A4	PNK	141	Ignition 3 Voltage
A5	BLK/WHT	1251	Ground
A6	-	-	Not Used
A7	YEL	1791	Left Air Temperature Door Control A
A8	DK/BLU/WHT	1199	Left Air Temperature Door Control B
A9	WHT/BLK	1236	Right Air Temperature Door Control A
A10	DK BLU	1646	Right Air Temperature Door Control B
A11	LT/GRN/BLK	1647	Recirculation Door Control A
A12	PNK/WHT	1648	Recirculation Door Control B
B1	WHT	193	Rear Defog Relay Control
B2	WHT	1038	HVAC Class 2 Serial Data
B3-B4	-	-	Not Used
B5	GRY	8	Instrument Panel Lamp Supply Voltage
B6	BLK	1050	Ground
B7-B8	-	-	Not Used
B9	GRY/BLK	754	Blower Motor Speed Control
B10	TAN	2273	Mode Door Control
B11	LT GRN	2275	Mode Door Position Signal
B12	-	-	Not Used