HVAC Control Module X3

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module X3 Connector End View

Courtesy of GENERAL MOTORS CORP.

HVAC Control Module X3 Connector Parts Information

Connector Part Information

OEM: 15491304
Service: See Catalog
Description: 20-Way F USCAR 0.64 Series (GY)

Terminal Part Information

Terminal/Tray: 7116-4618-02/14
Core/Insulation Crimp: P/P
Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module X3 Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	0.35 TN	518	Lower Left Air Temperature Sensor Signal
2	0.35 YE/BK	713	Defrost/Heater Mode Valve Position Sensor Signal
3	0.35 PU	1838	Recirculation Door Position Signal
4	0.35 GY/BK	754	Blower Motor Speed Control
5-9	-	-	Not Used
10	0.35 GY	598	Reference Voltage
11	0.35 TN	520	Lower Right Air Temperature Sensor Signal
12	0.35 L-BU	733	Air Temperature Door Position Signal
13	0.35 D-BU	1646	Right Air Temperature Door Position Signal
14	-	-	Not Used
15	0.35 TN	2273	Mode Door Control
16	0.35 D-BU	1199	Left Air Temperature Door Control
17	0.35 D-GN	1614	Recirculation Door Control
18	0.35 WH/BK	1236	Right Air Temperature Door Control
19	-	-	Not Used
20	0.35 YE	1791	Low Reference