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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2158 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS PART 4)TRANSFER CASE SHIFT CONTROL MODULE X2 (NQF/NQH)
2006 Chevrolet Suburban C2500, 6.0 U

Transfer Case Shift Control Module X2 (NQF/NQH)

2006 Chevrolet Suburban C2500, 6.0 USECTION Transfer Case Shift Control Module X2 (NQF/NQH)
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: Transfer Case Shift Control Module X2 (NQF/NQH) Connector End View
GM1866236Courtesy of GENERAL MOTORS CORP.
Transfer Case Shift Control Module X2 (NQF/NQH)

Pin Wire Circuit Function
1-2 - - Not Used
3 0.5 TN/WH 1695 Axle Switch Signal
4 0.5 TN 2501 High Speed GMLAN Serial Data Bus-
5 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus+
6 0.35 PK 239 Ignition 1 Voltage
7-8 - - Not Used
9 0.5 YE/BK 7478 Low Reference (NQH)
10 0.5 D-BU 5985 Accessory Wakeup Serial Data
11 0.5 L-GN 7479 Rotary Position Sensor Signal (NQH)
12 0.5 TN 2501 High Speed GMLAN Serial Data Bus-
13 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus+
14 0.35 YE 7474 Incremental Encoder Direction Signal
15-16 - - Not Used
Connector Part Information 
  • OEM: 13547238
  • Service: 88988779
  • Description: 16-Way F 1.5 Series (GY)
Terminal Part Information 
  • Terminal/Tray: 8240-0127/22
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
RENDER: 1.0x

NO RELATED

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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.