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Central Sequential Fuel Injection (Central SFI) X7 (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) X7 (LU3) Connector End View
GM1903780Courtesy of GENERAL MOTORS CORP.
Central Sequential Fuel Injection (Central SFI) X7 (LU3)

Pin Wire Circuit Function
A 0.5 TN/WH 845 Fuel Injector 5 Control
B 0.5 PK 1839 Ignition 1 Voltage
C 0.5 PK/BK 1746 Fuel Injector 3 Control
D 0.5 PK 1839 Ignition 1 Voltage
E 0.5 PK 1839 Ignition 1 Voltage
F 0.5 TN 1744 Fuel Injector 1 Control
G 0.5 L-GN/BK 1745 Fuel Injector 2 Control
H 0.5 PK 1839 Ignition 1 Voltage
J 0.5 PK 1839 Ignition 1 Voltage
K 0.5 L-BU/BK 844 Fuel Injector 4 Control
L 0.5 PK 1839 Ignition 1 Voltage
M 0.5 YE/BK 846 Fuel Injector 6 Control
Connector Part Information 
  • Harness: Engine
  • OEM: 12177083
  • Service: 12167140
  • Description: 12-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Terminal/Tray: 12066132/2
  • Core/Insulation Crimp: E/E
  • Release Tool/Test Probe: J-38125-13A/J-35616-6 (BN)
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