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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 927 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROLS CONNECTORSCENTRAL SEQUENTIAL FUEL INJECTION (CENTRAL SFI)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Central Sequential Fuel Injection (Central SFI)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Central Sequential Fuel Injection (Central SFI)
WARNING: This page is about a different car, the 2007 GMC Savana and 2007 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Central Sequential Fuel Injection (Central SFI) Connector End View
GM39782Courtesy of GENERAL MOTORS CORP.
Central Sequential Fuel Injection (Central SFI) Connector & Terminal Parts Information

Connector Part Information 
  • OEM: 12177083
  • Service: 12167140
  • Description: 12-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Terminal/Tray: 12066132/2
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
Central Sequential Fuel Injection (Central SFI) Terminal Identification

Pin Wire Color Circuit No. Function
A TN/WH 845 Fuel Injector 5 Control
B PK 139 Ignition 1 Voltage
C PK/BK 1746 Fuel Injector 3 Control
D PK 139 Ignition 1 Voltage
E PK 139 Ignition 1 Voltage
F TN 1744 Fuel Injector 1 Control
G L-GN/BK 1745 Fuel Injector 2 Control
H PK 239 Ignition 1 Voltage
J PK 239 Ignition 1 Voltage
K L-BU/BK 844 Fuel Injector 4 Control
L PK 239 Ignition 1 Voltage
M YE/BK 846 Fuel Injector 6 Control
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.