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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Engine Controls And Fuel - 3.6L (LGX LF4) - Repair Instructions) >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LGX) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief 
  2. Remove Fuel Injection Fuel Rail Noise Shield. Refer to Fuel Injection Fuel Rail Noise Shield Replacement 
  3. Remove and DISCARD Fuel Feed Intermediate Pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LGX) 
  4. Fig 1: Electrical Connector
    GM4093309Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect Electrical Connector (1)
  6. Fig 2: Fuel Injection Fuel Rail Fasteners
    GM4093321Courtesy of GENERAL MOTORS COMPANY
  7. Remove Fuel Injection Fuel Rail Fastener (1) (Qty: 3)
  8. Fig 3: Fuel Injection Fuel Rail And Injector Rail Assembly Remover
    GM4093446Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the curved hook EN-49248-3  of the Injector Rail Assembly Remover is properly seated across the underside of the fuel rail as shown. The flat hook EN-49248-4  will NOT work for this application.

    NOTE:

    Use care when removing the fuel injection fuel rail assembly in order to prevent damage to the fuel injector spray tips.

  9. Using the EN-49248  Injector Rail Assembly Remover (1), evenly raise the fuel injection fuel rail (2) as an assembly.
  10. Once the fuel injection fuel rail is free, remove the EN-49248  Injector Rail Assembly Remover (1).
  11. NOTE:

    The direct fuel injectors must be rebuilt whenever the injector has been released from the fuel rail or cylinder head.

  12. Once the fuel injection fuel rail is removed, remove the fuel injectors and rebuild them. Refer to Fuel Rail and Injectors Cleaning and Inspection