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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1416 (Engine Control System - 4.8L, 5.3L, & 6.0L - Introduction) >> Repair Instructions >> Fuel Hose/Pipes Replacement - Chassis >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Clean the fuel/evaporative emissions (EVAP) pipe connections and surrounding areas before disconnecting the pipes in order to avoid possible contamination of the fuel/EVAP system.
    Fig 1: View Of EVAP/Fuel Hose/Pipes
    GM856643Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
  2. Disconnect the fuel feed and return pipes (1) at the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  3. Disconnect the EVAP canister purge pipe (3). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  4. Cap the fuel rail and EVAP pipes in order to prevent possible contamination of the EVAP/fuel system.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    6. Fig 2: View Of Left Catalytic Converter To The Exhaust Manifold Connection
    GM899634Courtesy of GENERAL MOTORS CORP.
  6. Remove the nuts securing the left catalytic converter to the exhaust manifold.
    7. Fig 3: View Of Right Catalytic Converter To The Exhaust Manifold Connection
    GM899636Courtesy of GENERAL MOTORS CORP.
  7. Remove the nuts securing the right catalytic converter to the exhaust manifold.
  8. Lower the catalytic converter assembly until it rests on the vehicle frame.
    9. Fig 4: Removing EVAP/Fuel Hose/Pipe Assembly From Retaining Clips
    GM899733Courtesy of GENERAL MOTORS CORP.
  9. Use the following procedure if the vehicle is equipped with 2 wheel drive (2WD):
    1. Support the transmission with a suitable transmission jack.
    2. Remove the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
    3. Lower the transmission slightly.
    4. Remove the EVAP/fuel hose/pipe assembly from the retaining clips (1) on the transmission.
    10. Fig 5: Removing EVAP/Fuel Hose/Pipe Assembly From Retaining Clips
    GM899734Courtesy of GENERAL MOTORS CORP.
  10. Use the following procedure if the vehicle is equipped with 4 wheel drive (4WD):
    1. Remove the transfer case. Refer to Transfer Case Assembly Replacement in Transfer Case - NVG 126-NP4 or to Transfer Case Assembly Replacement (TrailBlazer, Envoy) in Transfer Case - NVG 226-NP8.
    2. Remove the front propeller shaft. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
    3. Support the transmission with a suitable transmission jack.
    4. Remove the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
    5. Lower the transmission slightly.
    6. Remove the EVAP/fuel hose/pipe assembly from the retaining clips (1) on the transmission.
    11. Fig 6: View Of EVAP/Fuel Hose/Pipes
    GM856643Courtesy of GENERAL MOTORS CORP.
  11. Remove the EVAP/fuel hose/pipe bracket nut (2).
  12. Remove the fuel hose/pipe bracket from the bellhousing stud.
    13. Fig 7: Locating Fuel Tank Fittings
    GM899732Courtesy of GENERAL MOTORS CORP.
  13. Disconnect the fuel return pipe and EVAP pipe from the fuel tank pipes. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  14. Disconnect the fuel feed pipe from the fuel filter. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  15. Cap the fuel filter and pipes at the fuel tank.
  16. Remove the EVAP/fuel hose/pipe assembly from the vehicle.
    17. IMPORTANT: Note the position of the EVAP/fuel hose/pipe assembly clips prior to disassembly.
  17. Remove the EVAP/fuel hose/pipe assembly retaining clips.
  18. Remove the fuel feed or return pipe to be replaced from the EVAP/fuel hose/pipe assembly.
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