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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 2.0L (LTG) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Removal Procedure
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Removal Procedure

  1. Remove the fuel injection fuel rail noise shield (1). Refer to Fuel Injection Fuel Rail Noise Shield Replacement .
    Fig 1: Fuel Injection Fuel Rail Noise Shield
    GM2726736Courtesy of GENERAL MOTORS COMPANY
    WARNING: The noise cancelling foam component MUST be replaced if it has been exposed to engine fluids. Failure to replace the noise cancelling foam component that has been exposed to engine fluids may result in an engine fire resulting in catastrophic engine damage and possible injury or death.
  2. Remove the fuel feed intermediate pipe. Refer to Fuel Feed Intermediate Pipe Replacement .
  3. Remove the fuel injection fuel rail pressure sensor. Refer to Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement .
  4. Disconnect the electrical harness from the fuel rail harness connection.
  5. Remove the fuel rail assembly retaining bolts and upper rubber grommets, if necessary.
  6. Install EN-49248  studs (1) into the 2 outermost fuel rail assembly retaining bolt locations. Tighten the studs to 22 N.m (16 lb ft).
    Fig 2: Identifying Fuel Rail Assembly Remover Studs
    GM2726738Courtesy of GENERAL MOTORS COMPANY
    NOTE: Use care to avoid contact with the fuel rail harness during special tool installation and fuel rail removal.
  7. Install EN-49248  remover (2) onto each stud and engage the hooks to the fuel rail. Install the nuts (3) retaining the remover onto the studs and tighten until snug.
  8. Using EN-49248  remover, remove the fuel rail assembly.
    Fig 3: Fuel Rail Assembly Remover
    GM2726737Courtesy of GENERAL MOTORS COMPANY
    NOTE: EN-49248 will assist in the proper removal of the fuel rail assembly. Ensure that the following conditions are met:
    • Turn the handles simultaneously in order to pull the fuel rail straight out along the fuel injector axis.
    • DO NOT twist when pulling out on the fuel rail and injector assembly.