Removal Procedure

Relieve the fuel pressure. Refer to Fuel Pressure Relief .
Remove and DISCARD the fuel feed pipe. Refer to Fuel Feed Pipe Replacement (At Tank FWD) , Fuel Feed Pipe Replacement (At Tank AWD) , Fuel Feed Pipe Replacement (LF3 At Engine) .
Remove and DISCARD the fuel feed intermediate pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LF3) .

Fig 1: High Pressure Fuel Pump

Courtesy of GENERAL MOTORS COMPANY

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