HVAC Control Module, C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110259 16-Way F Micro-Pack 100 Series (GN)
Pin	Wire Color	Circuit No.	Function
A1	OG	1040	Battery Positive Voltage
A2	PK	739	Ignition 1 Voltage
A3	WH	1038	HVAC Class 2 Serial Data
A4	-	-	Not Used
A5	GY	8	Instrument Panel Lamp Supply Voltage
A6	BK	150	Ground
A7	D-GN	734	Inside Air Temperature Sensor Signal
A8	GY	720	Low Reference
B1	BK	516	Upper Left Air Temperature Sensor Signal
B2	-	-	Not Used
B3	TN	517	Upper Right Air Temperature Sensor Signal
B4	PU	719	Low Reference
B5	L-BU/BK	590	Driver Sunload Sensor Signal
B6	GY	1548	Passenger Sunload Sensor Signal
B7	BN	718	Low Reference
B8	BK/WH	1551	Ground