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Home >> Chevrolet >> 2023 >> Trailblazer RS, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.35L (L3T) - Repair Instructions >> Repair Instructions >> Fuel Pump Replacement >> Removal Procedure

Removal Procedure

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. GM5278871Courtesy of GENERAL MOTORS COMPANY

    Evaporative Emission Canister Purge Tube - Remove - Evaporative Emission Canister Purge Tube Replacement 

  4. Remove the positive crankcase ventilation tube - compressor air intake turbocharger to camshaft cover. Positive Crankcase Ventilation Tube Replacement (Air Cleaner Outer Intermediate Duct to Camshaft Cover)Positive Crankcase Ventilation Tube Replacement (Compressor Air Intake Turbocharger to Camshaft Cover)
  5. GM5390615Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Pipe - Underbody @ Fuel Pump - Disconnect - Metal Collar Quick Connect Fitting Service 

  6. Fuel Feed Intermediate Pipe - Remove - Fuel Feed Intermediate Pipe Replacement 
  7. GM5323814Courtesy 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 canceling 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

  8. GM5047950Courtesy 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 [2x]

  9. Fuel Pump (2) - Remove
  10. Fuel Pump Seal (3) - Remove and DISCARD
  11. Valve Lifter Follower (4) - Remove