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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) System Hoses/Pipes Replacement (2500 Series - Front Tank) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Clean the evaporative emission (EVAP) line connections and surroundings areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
    Fig 1: View Of Fuel Feed Line, Rear Fuel Feed Line, EVAP Purge Line & EVAP Vapor Line (2500 Series - Front Tank)
    GM1312082Courtesy of GENERAL MOTORS CORP.
  1. Remove the 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) .
  2. Disconnect and remove the EVAP purge line (3) from the sending unit and retaining clips. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  3. Disconnect and remove the EVAP vapor line (1) from the valve and retaining clips. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  4. Cap the fuel feed and EVAP openings in order to prevent possible fuel/EVAP system contamination.
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