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Home >> Chevrolet >> 2003 >> SSR LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 5.3L - Introduction >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
  1. Install the backup ring (10) on the fuel pressure regulator (9).
  2. Install the new large O-ring (11) on the fuel pressure regulator.
  3. Install the regulator filter (12) on the fuel pressure regulator.
  4. Install the new small O-ring (13) on the fuel pressure regulator.
  5. Lubricate the fuel pressure regulator large O-ring and the small O-ring with clean engine oil.
  6. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  7. Install a new fuel pressure regulator retainer (8).
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable.
  10. Tighten the fuel filler cap.
  11. Inspect for leaks.
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition .
    4. Inspect for fuel leaks.
  12. Install the engine sight shield. Refer to Engine Sight Shield Replacement in Engine Mechanical-4.8L, 5.3L, 6.0L.
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