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HVAC Control Module X3

WARNING: This page is about a different car, the 2008 Saturn Sky and 2008 Pontiac Solstice. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HVAC Control Module X3 Connector End View
GM73151Courtesy of GENERAL MOTORS CORP.
HVAC Control Module X3

Pin Wire Circuit Function
A 0.35 YE 1791 Low Reference
B 0.35 L-GN/BK 2276 Defrost Door Position Signal
C 0.35 GY 6137 Evaporator Core Temperature Sensor Signal (C60)
D 0.35 D-BU 1646 Auxiliary Air Temperature Door Position Signal
E 0.35 L-BU 733 Air Temperature Door Position Signal
F 0.35 L-BU/BK 1688 5-Volt Reference
G 0.35 D-GN 1614 Recirculation Door Control
H 0.35 TN/BK 2274 Recirculation Door Control Circuit
J 0.35 L-GN 2275 Mode Door Position Signal
K 0.35 TN 2273 Mode Door Control
L 0.35 L-GN/BK 1647 Recirculation Door Control B
M 0.35 D-BU 1199 Air Temperature Door Control
Connector Part Information 
  • OEM: 12064799
  • Service: 15305996
  • Description: 12-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
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