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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 281 (Engine Controls And Fuel - 3.0L (LGY) - Repair Instructions) >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 1 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Fuel/gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

WARNING:

Wear safety glasses in order to avoid eye damage.

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. GM5515642Courtesy 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.

    Fuel Injection Fuel Rail Noise Shield- Upper (1) - Remove - Fuel Injection Fuel Rail Noise Shield Replacement (Upper) Fuel Injection Fuel Rail Noise Shield Replacement (Lower) 

  3. GM5507596Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    High pressure fuel feed pipes are one time use only. ALWAYS install a NEW high pressure fuel feed pipe if the pipe is removed OR the fittings are loosened.

    Fuel Feed Intermediate Pipe (1) - Remove and DISCARD - Fuel Feed Intermediate Pipe Replacement 

  4. GM5515758Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @Fuel Injector Wiring Harness-Bank 1 - Disconnect

  5. GM4091979Courtesy of GENERAL MOTORS COMPANY

    Fuel Injection Fuel Rail Bolt (1) - Remove [3x]

  6. GM4092171Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The EN-49248  Injector Rail Assembly Remover hooks MUST be properly seated on the underside of the fuel injection fuel rail.

    Install the EN-49248  Injector Rail Assembly Remover (1) and slowly work the fuel injection fuel rail (2) upwards in small, even increments.

  7. Once the fuel injection fuel rail (2) is free, remove the EN-49248  Injector Rail Assembly Remover (1).