2007 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE

Transfer Case Shift Control Module Connector End View C1

Fig 1: Transfer Case Shift Control Module C1 Connector End View
GM744295Courtesy of GENERAL MOTORS CORP.
Transfer Case Shift Control Module C1 Connector Parts Information

Connector Part Information 
  • OEM: 12084944
  • Service: 12084944
  • Description: 16-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Pins: A1, A3-B6
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
  • Pins: A2, B8
  • Terminal/Tray: 12146448/19
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
Transfer Case Shift Control Module C1 Connector Terminal Identification

Pin Wire Color Circuit No. Function
A1 PU 1807 Class 2 Serial Data
A2 L-GN 2659 Rear Differential Lock High Control
A3 PK 1561 Differential Lock Indicator Control
A4 PU/WH 1565 4 LO LOCK Indicator Control
A5 TN/BK 1566 4 HI LOCK Indicator Control
A6 L-BU 1693 Switch Signal
A7 RD/WH 1556 Channel C Encoder Signal
A8 - - Not Used
B1 - - Not Used
B2 YE/BK 1558 Channel B Encoder Signal
B3 L-GN/BK 1563 4 HI Indicator Control
B4 BN 1560 Neutral Indicator Control
B5 GY/BK 1694 4WD Low Signal
B6 BN/WH 1555 Channel P Encoder Signal
B7 - - Not Used
B8 BK 1725 Rear Differential Lock Low Reference
Factory Service Tools

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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