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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 4.3L (LV1)) >> Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the valve rocker arms. Valve Rocker Arm and Push Rod Replacement 
  2. Remove the starter. Starter Replacement (LV1) .
  3. GM5001787Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If the EN-42386 - A  Flywheel Holding Tool is not installed, the crankshaft may rotate. If the crankshaft rotates, disassembly and reassembly of the entire camshaft timing system may be required.

    Install the EN-42386 - A  Flywheel Holding Tool (1) in order to prevent crankshaft rotation.

  4. Remove the spark plug from the applicable cylinder. Spark Plug Replacement (Left Bank, With/Without C69) , or Spark Plug Replacement (Right Bank, Without C69) , or Spark Plug Replacement (Right Bank, With C69)
  5. Install the EN-39313  Spark Plug Port Adapter to the applicable cylinder.
  6. Connect the EN-39313  Spark Plug Port Adapter to a compressed air source.
  7. GM4166262Courtesy of GENERAL MOTORS COMPANY

    Install the EN-46335-A  On-Vehicle Valve Spring Compressor (1) above the applicable cylinder as shown.

  8. tighten the EN-46335-A  On-Vehicle Valve Spring Compressor bolt (2).
  9. Remove the valve keepers (3).
  10. Loosen the EN-46335-A  On-Vehicle Valve Spring Compressor bolt and remove the compressor.
  11. GM4166266Courtesy of GENERAL MOTORS COMPANY

    Valve Spring Retainer (1) - Remove

  12. Valve Spring (2) - Remove
  13. GM4166267Courtesy of GENERAL MOTORS COMPANY

    Use the EN-46116  Valve Stem Seal Remover/Installer (1) in order to remove the valve stem seal (2).

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