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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> High Pressure Regulator (HPR) Replacement >> Assembly Procedure

Assembly Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying High Pressure Regulator (HPR) Inlet Fitting Components
    GM327075Courtesy of GENERAL MOTORS CORP.
  1. Install the filter seal (2).
  2. Install the filter (3).
  3. Install the filter spring (4).
    4. Fig 2: Identifying High Pressure Regulator (HPR) Components
    GM296393Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Prior to installation, apply pipe thread sealant with Teflon® to the threads of the following:
    • Fuel outlet fitting (4)
    • Pressure relief device (3)
    • Coolant fittings (2, 5)
  4. Install the fuel outlet fitting (4).

    Tighten:  Tighten the fuel outlet fitting hand tight plus one to three turns as required to seal and properly align the fitting.

  5. Install the pressure relief device (3).

    Tighten:  Tighten the pressure relief device hand tight plus one to three turns as required to seal the fitting.

  6. Install the coolant fittings (2, 5).

    Tighten:  Tighten the coolant fittings hand tight plus one to three turns as required to seal and properly align the fitting.

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