HVAC Control Module Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15356937 32-Way M (BLK) Doc N Loc Series RW
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	DK GRN	44	Instrument Panel Lamps Dimmer Switch Signal
A3	PPL	1783	Twilight Sentinel Delay Signal
A4	YEL	61	Low Reference
A5	WHT	278	Ambient Light sensor Signal
A6	LT BLU/ BLK	1688	5 Volt Reference
A7	-	-	Not Used
A8	BRN	141	Ignition 3 Voltage
A9	BLK/WHT	351	Ground
A10	ORN	1140	Battery Positive Voltage
A11-A12	-	-	Not Used
A13	GRY/BLK	754	Blower Motor Speed Control
A14	PPL	1807	Class 2 Serial Data (Primary)
A15	PPL	1807	Class 2 Serial Data (Primary)
A16	-	-	Not Used
B1-B2	-	-	Not Used
B3	LT BLU	1788	Traction Control Switch Signal
B4	-	-	Not Used
B5	LT GRN	80	Key In Ignition Switch Signal
B6	PNK/BLK	1597	Interior Lamp Switch On Signal
B7	YEL	1791	Air Temperature Valve Motor Low Reference
B8	DK GRN	1614	Recirculation Door Motor Control
B9	YEL	1318	Mode Control Door
B10	DK BLU	1199	Air Temperature Door Control
B11-B14	-	-	Not Used
B15	YEL	1491	Backlight Lamps Control
B16	BLK	350	Ground