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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 >> Fuel Rail Assembly Replacement (KL8) >> Removal Procedure

Removal 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.
    CAUTION: Refer to Compressed Natural Gas (CNG) Flammability Caution in Cautions and Notices.
    CAUTION: Refer to Compressed Natural Gas (CNG) Fuel Pressure Relief Caution in Cautions and Notices.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
    2. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical in the C/K Pickup service manual.
  3. Before removal, clean the fuel rail assembly with a spray type engine cleaner, GM X-30A or equivalent, if necessary. Follow the package instructions. Do not soak fuel rails in liquid cleaning solvent.
    4. Fig 1: View Of Top Engine Cover
    GM665886Courtesy of GENERAL MOTORS CORP.
  4. Remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L Engines) Engine Sight Shield Replacement (6.0L Engine w/RPOs Y91 and Z88) in Engine Mechanical in the C/K Pickup service manual.
    5. Fig 2: Identifying IPR Fuel Outlet Lines Components
    GM757010Courtesy of GENERAL MOTORS CORP.
  5. Loosen and remove the fuel line to rail clamps (9).
  6. Remove the fuel line retainers (7).
  7. Disconnect the fuel lines (5, 8) from the fuel rails (1, 10).
    8. Fig 3: Identifying Fuel Injector Connectors
    GM757006Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the fuel rail temperature and pressure sensor electrical connectors (7, 2).
    9. IMPORTANT: Identify the injector connectors to their corresponding engine cylinder to ensure correct sequential injector firing order after reassembly.
  9. Disconnect the 8 fuel injector electrical connectors (6).
  10. Remove the fuel rail attaching bolts (1).
  11. Remove the fuel rail with injectors as an assembly.
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