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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (LSY) - Repair Instructions >> Repair Instructions >> Fuel Pump Replacement >> Removal Procedure
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Removal Procedure

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. Remove the fuel feed intermediate pipe. Fuel Feed Intermediate Pipe Replacement 
  4. GM5600704Courtesy of GENERAL MOTORS COMPANY

    Disconnect the fuel feed pipe from the clip (1).

  5. Disconnect the fuel feed pipe (2) from the fuel pump. Metal Collar Quick Connect Fitting Service 
  6. GM4967233Courtesy 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 Pump Insulator (1) - Remove

  7. Disconnect the electrical connector.
  8. GM4967228Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Alternately loosen the fuel pump bolts one turn at a time until the pump is fully disengaged from fuel pump lifter follower. Trying to remove the pump bolts without even side-to-side loosening may result in pump plunger damage

    Fuel Pump Bolt (4) - Remove [2x]

  9. Fuel Pump (1) - Remove
  10. Fuel Pump Seal (3) - Remove and DISCARD
  11. Valve Lifter Follower (2) - Remove