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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 Pump Replacement (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. Remove Plenum Front Panel. Refer to Plenum Front Panel Replacement .
  2. Remove and DISCARD Fuel Feed Intermediate Pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LGX) .
    3. Fig 1: Electrical Connector
    GM4420331Courtesy of GENERAL MOTORS COMPANY
  3. Disconnect Electrical Connector (1)
    4. Fig 2: Fuel Feed Pipe And Fuel Pump
    GM4094206Courtesy of GENERAL MOTORS COMPANY
  4. Disconnect Fuel Feed Pipe (1) @ Fuel Pump (2). Refer to Metal Collar Quick Connect Fitting Service 
    5. Fig 3: Fuel Pump Components
    GM4095372Courtesy 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

  5. Remove and DISCARD Fuel Pump Bolts (1) (Qty: 2)
    1. Remove Fuel Pump (2)
    2. Remove and DISCARD Gasket (3)
    3. Remove and DISCARD Fuel Pump O-Ring (4)
      4. NOTE:

      Take note of the orientation of the valve lifter follower (5).

    4. Remove Valve Lifter Follower (5)
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