Fuel Pump Removal (LF4)

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Fuel Rail Noise Shield

Courtesy of GENERAL MOTORS COMPANY

Remove the fuel rail noise shield (1).

Fig 2: Identifying Fuel Feed Pipe Components

Courtesy of GENERAL MOTORS COMPANY

Remove the fuel rail wiring connectors from the fuel feed pipe bracket.
Remove the fuel feed pipe bolts (1).
Remove and discard the fuel feed pipe (2).

Fig 3: Identifying High Pressure LH To RH Fuel Rail Crossover Pipe

Courtesy of GENERAL MOTORS COMPANY

Remove and discard the high pressure LH to RH fuel rail crossover pipe (1).

Fig 4: Identifying High Pressure Fuel Pump Components

Courtesy 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

Remove and discard high pressure fuel pump bolts (1).
Remove the high pressure fuel pump (2).
Remove the valve lifter follower (3).
Remove and discard the high pressure fuel pump gasket (4).
Remove and discard the high pressure fuel pump O-ring (5).