HVAC Control Module X3 (C67/C42/CJ2/MEX)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module X3 (C67/C42/CJ2/MEX) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.35 TN	518	Lower Left Air Temperature Sensor Signal (CJ2)
2	0.35 YE/BK	713	Defrost/Heater Mode Valve Position Sensor Signal
3	0.35 PU	1838	Recirculation Door Position Signal (CJ2)
4	0.35 GY/BK	754	Blower Motor Speed Control
5-9	-	-	Not Used
10	0.35 GY	598	5-Volt Reference
11	0.35 TN	520	Lower Right Air Temperature Sensor Signal (CJ2)
12	0.35 L-BU	733	Air Temperature Door Position Signal (CJ2)
13	0.35 D-BU	1646	Right Air Temperature Door Position Signal
14	0.5 D-BU	204	A/C Refrigerant Pressure Sensor Signal (HP2)
15	0.35 TN	2273	Mode Door Control
16	0.35 D-BU	1199	Left Air Temperature Door Control (CJ2)
17	0.35 D-GN	1614	Recirculation Door Control (CJ2/C67 without MEX or MEX without C42)
18	0.35 WH/BK	1236	Right Air Temperature Door Control
19	0.5 TN	914	Low Reference (HP2)
20	0.35 YE	1791	Low Reference

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)