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Home >> GMC >> 2013 >> Sierra 1500 XFE >> Repair and Diagnosis >> External Pages >> Different car >> Section 1896 (Wiring Systems And Power Management - Component Connector End Views - Auxiliary Body Control Module (XBCM) X1 To Charge Air Cooler Outlet Temperature Sensor (Diesel)) >> Component Connector End Views >> Central Sequential Fuel Injection (Central SFI) X1-X6 (LU3) Connector End View

Central Sequential Fuel Injection (Central SFI) X1-X6 (LU3) Connector End View

WARNING: This page is about a different car, the 2011 GMC Sierra, 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Silverado, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Central Sequential Fuel Injection (Central SFI) X1-X6 (LU3) Connector End View
GM1903781Courtesy of GENERAL MOTORS CORP.
Central Sequential Fuel Injection (Central SFI) X1-X6 (LU3)

Pin Wire Circuit Function
X1-1 0.5 BK 1744 Fuel Injector 1 Control
X1-2 0.5 BK 1839 Ignition 1 Voltage
X2-1 0.5 BK 1745 Fuel Injector 2 Control
X2-2 0.5 BK 1839 Ignition 1 Voltage
X3-1 0.5 BK 1746 Fuel injector 3 Control
X3-2 0.5 BK 1839 Ignition 1 Voltage
X4-1 0.5 BK 844 Fuel Injector 4 Control
X4-2 0.5 BK 1839 Ignition 1 Voltage
X5-1 0.5 BK 845 Fuel Injector 5 Control
X5-2 0.5 BK 1839 Ignition 1 Voltage
X6-1 0.5 BK 846 Fuel Injector 6 Control
X6-2 0.5 BK 1839 Ignition 1 Voltage
Connector Part Information 
  • Harness: Fuel Injector Jumper
  • OEM: 12597538
  • Service: Service by Component Assembly
  • Description: 2-Way F Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
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