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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 2.0L (LTG) - Repair Instructions >> Repair Instructions >> Fuel Pump Replacement >> Removal Procedure
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Removal Procedure

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. Fuel Pump Cover - Remove - Fuel Pump Cover Replacement 
  3. Fuel Feed Pipe@Fuel Pump - Disconnect - Fuel Feed Pipe Replacement (Without HP9) Fuel Feed Pipe Replacement (HP9) 
  4. 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.

  5. Fuel Feed Intermediate Pipe - Remove and DISCARD - Fuel Feed Intermediate Pipe Replacement 
  6. GM4259130Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1)@Fuel Pump (2) - Disconnect

  7. GM4259458Courtesy 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 (1) - Remove and DISCARD [2x]

  8. NOTE:

    Ensure that during removal of the fuel pump that the valve lifter follower does NOT fall apart.

  9. Fuel Pump (2) - Remove
  10. Fuel Pump Gasket (3) - Remove and DISCARD
  11. Fuel Pump O-Ring (4) - Remove and DISCARD
  12. NOTE:
    • The valve lifter follower MAY remain in the cylinder head bore after removing the fuel pump.
    • If the valve lifter follower does NOT pull out of the cylinder head bore with the fuel pump, then remove it afterwards.
  13. Valve Lifter Follower (5) - Remove