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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 - Engine >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Clean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.
    Fig 1: View Of EVAP Tube To Solenoid & Vapor Pipe
    GM1285743Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)) in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
  2. Disconnect the EVAP tube from the EVAP canister purge solenoid (1).
    • Push the large size white retainer portion in.
    • Push down, while pulling up slightly in order to disengage the tube.
  3. Disconnect the EVAP tube from the chassis EVAP pipe (2).
    • Push the large size white retainer portion in.
    • Push down, while pulling up slightly in order the disengage the tube.
  4. Remove the EVAP tube.
  5. Cap the EVAP canister purge solenoid and the EVAP chassis pipe in order to prevent possible EVAP system contamination.
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