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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 5.7L (LS6)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
    Fig 1: View Of Fuel Injector Sight Shield
    GM1392497Courtesy of GENERAL MOTORS CORP.
    3. Fig 2: Spark Plug Wire Routing
    GM74069Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the spark plug wires from the ignition coils.
    • Twist the spark plug wire boot 1/2 turn.
    • Pull only on the boot in order to remove the wire from the ignition coil.
  4. Disconnect the ignition coil wire harness main electrical connector.
    5. Fig 3: Locating EVAP Canister Purge Tube
    GM651868Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the evaporative emission (EVAP) canister purge tube from the intake manifold.
  6. Disconnect the EVAP canister purge tube from the EVAP canister purge solenoid valve.
  7. Remove the EVAP canister purge tube.
    8. Fig 4: Identifying EVAP Canister Purge Tubes
    GM1392565Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the EVAP canister purge tube from the EVAP canister purge solenoid valve.
  9. Disconnect the EVAP canister purge tube from the fuel feed pipe.
  10. Remove the EVAP canister purge tube.
  11. Disconnect the EVAP canister purge tube from the connector at the rear of the right head (1).
    12. Fig 5: Locating EVAP Canister Purge Solenoid Valve Electrical Connector
    GM651871Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the EVAP canister purge solenoid valve electrical connector (2).
    13. Fig 6: View Of EVAP Canister Purge Solenoid Valve & Bracket
    GM419407Courtesy of GENERAL MOTORS CORP.
  13. Remove the EVAP canister purge solenoid valve from the bracket.
    14. Fig 7: Locating Ignition Coil Bracket Studs
    GM697215Courtesy of GENERAL MOTORS CORP.
  14. Remove the ignition coil bracket studs.
  15. Remove the ignition coil bracket.
    16. Fig 8: Valve Cover To Cylinder Head View
    GM260085Courtesy of GENERAL MOTORS CORP.
  16. Loosen the valve rocker arm cover bolts.
  17. Remove the valve rocker cover.
    18. Fig 9: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  18. Remove the gasket (1) from the rocker cover. Discard the OLD gasket.
  19. Clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection .
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