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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 Hose/Pipes Replacement - Chassis (Pickup - 5.3L (L59) Engine) >> Installation Procedure

Installation 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.
  1. Install the fuel feed, EVAP, and return pipe assembly.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. If vehicle is a crew or extended cab, install the fuel feed, EVAP, and return pipe assembly nuts.

    Tighten:  Tighten the nuts to 12 N.m (106 lb in).

  3. Fig 1: Fuel Feed, EVAP And Return Pipe Assembly (Extended Cab)
    GM878119Courtesy of GENERAL MOTORS CORP.
  4. If vehicle is a regular cab, install the fuel feed, EVAP, and return pipe assembly nuts.

    Tighten:  Tighten the nuts to 12 N.m (106 lb in).

  5. Remove the caps from the fuel pipes at the fuel tank.
  6. Fig 2: Fuel Feed, EVAP And Return Pipe Assembly (Regular Cab)
    GM878115Courtesy of GENERAL MOTORS CORP.
  7. Connect the fuel feed and return pipes at the fuel tank. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  8. Fig 3: Fuel Feed And Return Line Quick Connect Fittings
    GM878130Courtesy of GENERAL MOTORS CORP.
  9. If equipped with 4WD, install the torsion bar bracket. Refer to Torsion Bar Replacement in Front Suspension.
  10. Install the EHCU (1).
  11. Install the bolts (4) attaching the EHCU bracket to the frame (5).

    Tighten:  Tighten the bolts to 25 N.m (18 lb ft).

  12. Fig 4: View Of EBCM/EHCU Assembly
    GM379478Courtesy of GENERAL MOTORS CORP.
  13. Connect the brake lines to the BPMV.

    Tighten:  Tighten the fittings to 25 N.m (18 lb ft).

  14. Connect the chassis electrical harness connectors to the EBCM.
  15. Fig 5: Identifying Chassis Electrical Connectors To EBCM
    GM924296Courtesy of GENERAL MOTORS CORP.
  16. Install the EVAP canister. Refer to Evaporative Emission (EVAP) Canister Replacement (Pickup)  or Evaporative Emission (EVAP) Canister Replacement (Pickup - 5.3L (L59) Engine)  or Evaporative Emission (EVAP) Canister Replacement (1500 Crew Cab)  or Evaporative Emission (EVAP) Canister Replacement (Cab/Chassis) .
  17. Install the transfer case harness to the clip bracket.
  18. Install the clip to the bracket on the frame.
  19. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  20. Install the fuel hose/pipe clip to the bracket on the automatic transmission.
  21. Fig 6: Fuel Hose/Pipe Clip At Bracket On Automatic Transmission
    GM300385Courtesy of GENERAL MOTORS CORP.
  22. Install the HO2S sensor connector to the bracket.
  23. Install the fuel pipe bracket to the bellhousing stud.
  24. Install the fuel pipe bracket nut (2).

    Tighten:  Tighten the nut to 10 N.m (89 lb in).

  25. Lower the vehicle.
  26. Remove the caps from the fuel rail and EVAP pipes.
  27. Connect the EVAP canister purge tube (3). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  28. Connect the fuel feed and return pipes (1) at the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  29. Fig 7: View Of EVAP/Fuel Hose/Pipes
    GM856643Courtesy of GENERAL MOTORS CORP.
  30. Install the fuel fill cap.
  31. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  32. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.