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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS H1500, VAN PASSENGER, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALCOMPONENT LOCATIONS & COMPONENT CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWCENTRAL SEQUENTIAL FUEL INJECTION (SFI) X1-X6 (4.3L)
2008 Chevrolet Chevy Express H1500, Van Passenger, Gas

Central Sequential Fuel Injection (SFI) X1-X6 (4.3L)

2008 Chevrolet Chevy Express H1500, Van Passenger, GasSECTION Central Sequential Fuel Injection (SFI) X1-X6 (4.3L)
Fig 1: Central Sequential Fuel Injection (Sfi) X1-X6 (4.3L) Connector End View
GM1903781Courtesy of GENERAL MOTORS CORP.
Central Sequential Fuel Injection (SFI) X1-X6 (4.3L)

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 
  • OEM: 12597538 Part 2
  • Service: See Catalog
  • 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
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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.