HVAC Control Module Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15356937 12-Way M DLR (BLK)
Pin	Wire Color	Circuit No.	Function
A1	BLK/WHT	351	Ground
A2	BRN	41	Ignition 3 Voltage
A3-A4	-	-	Not Used
A5	BLK	450	Ground
A6	-	-	Not Used
B1	YEL	1491	Backlight Lamps Control
B2-B4	-	-	Not Used
B5	PPL	1881	HVAC Control Module Clock Signal
B6	LT BLU	1880	HVAC Control Module Data Signal

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15356942 32-Way M DNL RW (BLK)
Pin	Wire Color	Circuit No.	Function
A1	PPL	1807	Class 2 Serial Data
A2	PPL	1807	Class 2 Serial Data
A3	-	-	Not Used
A4	DK GRN	44	Instrument Panel Lamps Dimmer Switch Signal
A5	WHT	278	Ambient Light Sensor Signal
A6-A7	-	-	Not Used
A8	BRN	141	Ignition 3 Voltage
A9	ORN	192	Front Fog Lamp Switch Signal
A10	-	-	Not Used
A11	PNK/BLK	1597	Courtesy Lamps Switch On Signal
A12	DK BLU	1199	Left Air Temperature Door Control
A13	-	-	Not Used
A14	ORN	1140	Battery Positive Voltage
A15	-	-	Not Used
A16	LT BLU/WHT	1595	Key Cylinder Lamp Control
B1	GRY/BLK	754	Blower Motor Speed Control
B2	YEL	1491	Backlight Lamps Control
B3	BLK	450	Ground
B4	PPL	1783	Twilight Sentinel Delay Signal
B5	LT BLU/BLK	1688	5 Volt Reference
B6	YEL	61	Low Reference
B7-B8	-	-	Not Used
B9	LT BLU	1788	Traction Control Switch Signal (w/NW9)
B10	BLK	1576	Trunk Release Switch Signal (w/UA6)
B11	LT GRN	80	Key in Ignition Switch Signal
B12	-	-	Not Used
B13	YEL	1318	Mode Door Control
B14	BLK/WHT	351	Ground
B15	YEL	1791	Low Reference
B16	DK GRN	1614	Recirculation Door Control