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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Engine Controls - 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 car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The fuel pressure regulator retaining clip is specific to the fuel rail-regulator design and cannot be interchanged.
  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)
    7. Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
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