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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 - LEFT I/P X12
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Junction Block - Left I/P X12

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Junction Block - Left I/P X12
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 - Left I/P X12 Connector End View
GM1665727Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X12

Pin Wire Circuit Function
1 3 RD/WH 5040 Battery Positive Voltage
2 - - Not Used
3 0.5 L-BU 1320 CHMSL Supply Voltage
4 0.5 YE/BK 5813 Park Enable Supply Voltage (ARS)
0.5 YE/BK 5813 Park Enable Supply Voltage (ARS)
5 0.5 GY 157 Interior Lamp Control (with LWB or without E52)
6 0.35 PK 1139 Ignition Voltage
7 0.35 PK 239 Ignition Voltage (KB6)
0.35 PK 239 Ignition Voltage (UVC)
8 3 BK 2550 Ground
Connector Part Information 
  • OEM: 13516834
  • Service: 19149292
  • Description: 8-Way F GT 280 Series (BN)

Terminal Part Information 
  • Pins: 1, 8
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3-7
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins 3, 5-7: E/A
  • Core/Insulation Crimp: Pins 4: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3, 7 (HP2)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
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.