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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System - 4.8L, 5.3L & 6.0L (Introduction)) >> Repair Instructions >> Fuel Pressure Regulator Replacement (5.3L (L59) Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: The fuel pressure regulator retaining clip is specific to the fuel rail-regulator design and cannot be interchanged.
    Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
  2. Remove the fuel pressure regulator vacuum hose.
  3. Clean any dirt from the fuel pressure regulator retainer and surrounding area.
  4. Remove the fuel pressure regulator retainer (8).
  5. Remove the fuel pressure regulator (9).
  6. Ensure none of the following parts are still in the fuel rail.
    • Backup ring (10)
    • Regulator seal O-ring (11)
    • Regulator filter (12)
    • Regulator seal O-ring (13)
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