FixVault

Installation Procedure

  1. GM5323820Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The camshaft MUST be at the base circle position before the fuel pump is installed.
    • At the base circle position, the EN-52443  High Pressure Fuel Pump Alignment Tool will sit flush with the cylinder head.

    Install the EN-52443  High Pressure Fuel Pump Alignment Tool and turn the crankshaft until the camshaft lobe is at the base circle position.

  2. Remove the EN-52443  High Pressure Fuel Pump Alignment Tool (1).
  3. GM5047950Courtesy of GENERAL MOTORS COMPANY

    Lubricate the valve lifter follower (4) with clean engine oil.

  4. Valve Lifter Follower (4) - Install
  5. Fuel Pump Seal (3) - Install NEW
  6. Fuel Pump (2) - Install
  7. CAUTION:

    Alternately hand-tighten the fuel pump bolts one turn at a time until the pump is fully seated. Trying to draw down the pump without even side-to-side tightening may result in pump plunger damage.

  8. Fuel Pump Bolt (1) - Install and tighten [2x] 36 N.m (27 lb ft)
  9. 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 cancelling 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) - Install

  10. Fuel Feed Intermediate Pipe - Install - Fuel Feed Intermediate Pipe Replacement 
  11. GM5390615Courtesy of GENERAL MOTORS COMPANY

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

  12. Install 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) , or Positive Crankcase Ventilation Tube Replacement (Compressor Air Intake Turbocharger to Camshaft Cover)
  13. GM5278871Courtesy of GENERAL MOTORS COMPANY

    Evaporative Emission Canister Purge Tube - Install - Evaporative Emission Canister Purge Tube Replacement 

  14. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  15. Inspect for leaks using the following procedure:
    1. Turn ON the ignition with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition with the engine OFF.
    4. Inspect for fuel leaks.
  16. Perform the fuel pump trim reset. Fuel Pump Trim Reset