HVAC Control Module C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		174045-2 12-Way F Metri-Pack Mixed Series (BK)
Pin	Wire Color	Circuit No.	Function
1	OG	52	Blower Motor High Control
2	L-BU	72	Medium 2 Blower Motor Control
3	OG	52	Blower Motor High Control
4	L-BU	72	Medium 2 Blower Motor Control
5	BK	2250	Ground
6	TN	63	Blower Motor Medium 1 Control
7	BK	2250	Ground
8	YE	60	Blower Motor Low Control
9	BK	2250	Ground
10	BN	341	Ignition 3 Voltage
11	-	-	Not Used
12	OG	4340	Battery Positive Voltage