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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 (1500 Series) >> 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 the 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).
  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. Unbolt and reposition the front propeller shaft. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
    7. Fig 2: View Of Fuel Pipe Bracket & Nut At Bellhousing
    GM1238747Courtesy of GENERAL MOTORS CORP.
  7. Remove the fuel pipe bracket nut.
  8. Remove the fuel pipe bracket from the bellhousing stud.
    9. Fig 3: View Of Fuel Line Clip At Bracket
    GM1549616Courtesy 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. Fig 4: View Of Fuel Line Bracket Bolt
    GM1224302Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel line bracket bolt.
    12. Fig 5: View Of Fuel Feed & EVAP Lines At Fuel Tank
    GM1238596Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the fuel feed and EVAP lines from the fuel tank lines. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  13. Cap the fuel and EVAP lines at the fuel tank.
    14. Fig 6: View Of Fuel/EVAP Line Bundle
    GM1224304Courtesy of GENERAL MOTORS CORP.
  14. Remove the fuel and EVAP line clips from the frame and brace.
  15. Remove the fuel/EVAP line bundle.
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