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Home >> Hummer >> 2008 >> H2 4D Utility Pickup >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Electrical Component Locations >> Component Locations & Connector End Views >> Component Connector End Views >> HVAC Control Module X3
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HVAC Control Module X3

Fig 1: HVAC Control Module X3 Connector End View
GM1664552Courtesy of GENERAL MOTORS CORP.
Connector Part Information 
  • OEM: 31410-1201
  • Service: 15126710
  • Description: 20-Way F USCAR 0.64 Series (GY)
Terminal Part Information 
  • Pins: 1-4, 10-13, 15-18, 20
  • Terminal/Tray: 7116-4618-02
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: See Terminal Repair Kit
Pin Wire Circuit 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 5-Volt Reference
11 0.35 TN 520 Lower Right Air Temperature Sensor Signal
12 0.35 L-BU 733 Left Air Temperature Door Control
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 Auxiliary Air Temperature Door Position Signal
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
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