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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - 5.7L - 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.
    CAUTION: Refer to Fuel and EVAP Pipe Caution in Cautions and Notices.
    Fig 1: Removing Fuel Injector Sight Shield
    GM1392497Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
    2. Fig 2: Disconnecting Vacuum Supply Line Quick-Connect Fittings
    GM419425Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the vacuum supply line quick-connect fittings at the intake manifold and the evaporative emission (EVAP) canister purge valve. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  3. Remove the vacuum supply EVAP pipe.
  4. Cap the intake manifold pipe and the EVAP canister purge valve in order to prevent possible contamination.
    5. Fig 3: Disconnecting EVAP Engine Purge Pipe From Line Connection
    GM1392557Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the EVAP engine purge pipe from the line connection (2) at the right rear cylinder head. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  6. Disconnect the left bank coil electrical connection to gain access to the EVAP purge valve.
  7. Disconnect the EVAP pipe from the purge valve. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  8. Remove the EVAP engine purge pipe from under the fuel rail.
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