LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 387 (Engine Controls - Removal & Installation - Flex Fuel & Gasoline) >> Fuel Systems >> Fuel Line Replacement (Pickup) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Clean all fuel pipe connections and surrounding areas before disconnecting the pipes in order to avoid possible fuel system contamination.
    Fig 1: Fuel Feed And Return Pipes, Nuts and (EVAP) Canister Purge Tube
    G00576089Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to FUEL SYSTEM PRESSURE RELEASE .
  2. Disconnect the fuel feed and return pipes (1) at the fuel rail. Refer to REMOVAL & Installation (Metal Collar) .
  3. Disconnect the evaporative emission (EVAP) canister purge tube (3).
  4. Cap the fuel rail and EVAP pipes.
  5. Raise and suitably support the vehicle.
  6. Remove the fuel pipe bracket nut (2).
  7. Remove the fuel pipe bracket from the bellhousing stud.
  8. Remove the heated oxygen sensor (HO2S) sensor connector from the bracket.
    9. Fig 2: Fuel Hose/Pipe Clip
    G00576090Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel hose/pipe clip from the bracket on the automatic transmission.
  10. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  11. Remove the clip from the bracket on the frame.
  12. Remove the transfer case harness from the clip bracket.
  13. Remove the EVAP canister. Refer to EVAP CANISTER .
    14. Fig 3: Electro-Hydraulic Control Unit (EHCU)
    G00576091Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The area around the electro-hydraulic control unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled anti-lock brake components (ABS) components.
  14. Thoroughly wash all contaminants from around the EHCU.
  15. Disconnect the chassis electrical harness connectors from the electronic brake control module (EBCM).
    16. Fig 4: EHCU and Bolts
    G00576092Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Make sure that brake lines are tagged and kept in order for proper reassembly.
  16. Disconnect the brake lines from the brake pressure modulator valve (BPMV).
  17. Remove the bolts (4) attaching the EHCU bracket to the frame (5).
  18. Remove the EHCU (1).
    19. Fig 5: Fuel Feed And Return Pipes
    G00576093Courtesy of GENERAL MOTORS CORP.
  19. If equipped with 4WD, remove the torsion bar bracket. Refer to TORSION BAR REPLACEMENT .
  20. Disconnect the fuel feed and return pipes at the fuel tank. Refer to REMOVAL & Installation (Plastic Collar) .
  21. Cap the fuel pipes at the fuel tank.
    22. Fig 6: Fuel Feed, Evap, And Return Pipe Assembly Nuts (regular Cab)
    G00576094Courtesy of GENERAL MOTORS CORP.
  22. If vehicle is a regular cab, remove the fuel feed, EVAP, and return pipe assembly nuts.
    23. Fig 7: Fuel Feed, Evap, And Return Pipe Assembly Nuts (Crew or Extended Cab)
    G00576095Courtesy of GENERAL MOTORS CORP.
  23. If vehicle is a crew or extended cab, remove the fuel feed, EVAP, and return pipe assembly nuts.
  24. Remove the fuel feed, EVAP, and return pipe assembly.
scientia non olet · About LEMON Manuals