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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 993 (WIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER IDENTIFICATION VIEWS & COMPONENT CONNECTOR END VIEW INDEX)ELECTRICAL CENTER IDENTIFICATION VIEWSJUNCTION BLOCK - RIGHT I/P X4
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Junction Block - Right I/P X4

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Junction Block - Right I/P X4
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Junction Block - Right I/P X4 Connector End View
GM1667399Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X4

Pin Wire Circuit Function
A1 0.35 L-BU/BK 598 5-Volt Reference
0.35 L-BU/BK 598 5-Volt Reference
A2 0.35 GY/BK 520 Lower Right Air Temperature Sensor Signal (CJ2)
A3 0.35 WH/BK 518 Lower Left Air Temperature Sensor Signal (CJ2)
A4 0.35 YE 1791 Low Reference
0.35 YE 1791 Low Reference
A5 0.5 PU 1838 Recirculation Door Position Signal (CJ2)
A6 0.35 PU/WH 754 Blower Motor Speed Control
A7 - - Not Used
B1 0.35 L-BU/BK 598 5-Volt Reference
0.35 L-BU/BK 598 5-Volt Reference
B2 0.35 D-BU 1199 Left Air Temperature Door Control
B3 0.35 TN 2273 Mode Door Control
B4 0.35 YE 1791 Low Reference
0.35 YE 1791 Low Reference
B5 0.35 L-GN 713 Mode Door Position Signal
B6 0.35 L-BU 733 Left Air Temperature Door Position Signal
B7 - - Not Used
Connector Part Information 
  • OEM: 15467620
  • Service: 19115662
  • Description: 14-Way F GT 150 280 Series (BK)

Terminal Part Information 
  • Pins: A1, A4, B1, B4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A2, A3, A5, A6, B2, B3, B5, B6
  • Terminal/Tray: 12191812/19
  • 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.