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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System - 4.8L, 5.3L & 6.0L (Introduction)) >> Repair Instructions >> Evaporative Emission (EVAP) Hoses/Pipes Replacement - Chassis (2500 Series - Front) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Clean all fuel and evaporative emission (EVAP) lines connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.
    Fig 1: Identifying Fuel Feed & EVAP Pipes
    GM1238585Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
  2. Disconnect the fuel feed pipe (1) at the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  3. Disconnect the evaporative emission (EVAP) canister purge pipe (2). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  4. Cap the fuel rail and EVAP pipes.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    6. Fig 2: View Of Fuel Pipe Bracket & Nut At Bellhousing
    GM1238747Courtesy of GENERAL MOTORS CORP.
  6. Remove the fuel pipe bracket nut.
  7. Remove the fuel pipe bracket from the bellhousing stud.
    8. Fig 3: View Of Fuel Line Clip At Bracket On Automatic Transmission
    GM856646Courtesy of GENERAL MOTORS CORP.
  8. Remove the fuel hose/pipe clip from the bracket on the automatic transmission.
    9. Fig 4: View Of Fuel Hose/Pipe Clip At Bracket On Transfer Case (2500 Series - Front)
    GM858232Courtesy of GENERAL MOTORS CORP.
  9. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  10. Remove the front fuel tank. Refer to Fuel Tank Replacement (Single Tank)  or Fuel Tank Replacement (Single Tank w/5.3L (L59) Engine)  or Fuel Tank Replacement (Dual Tanks - Front)  or Fuel Tank Replacement (Dual Tanks - Rear) .
    11. Fig 5: View Of Fuel/EVAP Line Bundle (2500 Series - Front)
    GM1224406Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel line bracket nuts.
  12. Remove the fuel/EVAP line bundle.
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