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HVAC Control Module X1

Fig 1: HVAC Control Module X1 Connector End View
GM73151Courtesy of GENERAL MOTORS CORP.
HVAC Control Module X1

Pin Wire Circuit Function
A 0.35 BK/WH 1551 Ground
B-C - - Not Used
D 0.35 RD/WH 1040 Battery Positive Voltage
E 0.35 PK 739 Ignition Voltage
F - - Not Used
G 1.0 WH 2613 Auxiliary Blower Motor Speed Control
H 0.35 WH 1038 Class 2 Serial Data
J 0.5 BK 1450 Ground
K 0.35 GY 8 Instrument Panel Lamp Supply Voltage
L 0.35 WH 2622 Evaporator Temperature Sensor Signal
M 0.35 TN 552 Low Reference
Connector Part Information 
  • OEM: 12064799
  • Service: 15305996
  • Description: 12-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Pins: A, C, E, F, H-M
  • Terminal: 12146447/Tray 3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6
  • Pins: D, G
  • Terminal: 12146448/Tray 19
  • Core/Insulation Crimp: Pin D: E/C, Pin G: E/A
  • Release Tool/Test Probe: 12031876-1/J-35616-6
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