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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Mechanical - 2.0L (LTG)) >> Repair Instructions - On Vehicle >> Camshaft Position Actuator and Camshaft Replacement - Intake >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the camshaft cover. Refer to Camshaft Cover Replacement .
    NOTE: Ensure the engine is properly timed to Top Dead Center (TDC), prior to performing repairs.
  2. Remove the high pressure fuel pump. Refer to Fuel Pump Replacement .
  3. Install EN-50656  timing chain holding tool (1) and tighten to 8 N.m (71 lb in).
    Fig 1: Identifying Timing Chain Holding Tool
    GM2878182Courtesy of GENERAL MOTORS COMPANY
    NOTE: Ensure the EN-50656  holding tool is installed and securely tightened to prevent the camshaft chain from dropping into the front engine cover during camshaft actuator replacement.
  4. Align and install camshaft actuator locking tool (2) EN 50793  into the slots of the exhaust camshaft actuator and mount tool to engine front cover assembly and tighten the bolts (1) to 10 N.m (89 lb in).
    Fig 2: Camshaft Actuator Locking Tool
    GM2882184Courtesy of GENERAL MOTORS COMPANY
    CAUTION: Refer to Fastener Caution .
    NOTE: Ensure to mark actuator sprocket and chain before removal.
  5. Remove and DISCARD the camshaft actuator bolt (1).
    Fig 3: Camshaft Actuator Bolt
    GM2882183Courtesy of GENERAL MOTORS COMPANY
  6. Remove the EN-50793  holding tool (2).
    Fig 4: Camshaft Actuator Locking Tool
    GM2882184Courtesy of GENERAL MOTORS COMPANY
  7. Remove the upper timing chain guide bolts (1, 2).
    Fig 5: Upper Timing Chain Guide Bolts
    GM2882182Courtesy of GENERAL MOTORS COMPANY
  8. Remove the upper timing chain guide (3).
  9. Remove the camshaft front bearing cap bolts (4).
  10. Remove the camshaft front bearing cap (5).
    NOTE: Locate the pry points (6) in the camshaft front bearing cap. When using the 3 pry points to remove the front bearing cap evenly, use a protective material between the camshaft lobes, the cylinder head flange and pry tool.
  11. Mark the exhaust camshaft rear cap to ensure it is installed in the same position. Remove the exhaust camshaft bearing rear cap bolts (1) and cap (2).
    Fig 6: Exhaust Camshaft Bearing Rear Cap Bolts And Cap
    GM2882181Courtesy of GENERAL MOTORS COMPANY
  12. Mark the camshaft caps (4) to ensure they are installed in the same position.
    NOTE: Loosen each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.
  13. Remove the exhaust camshaft cap bolts (3).
  14. Remove the camshaft caps (4).
  15. Pull exhaust camshaft actuator assembly forward away from camshaft assembly (1), then lift rear of exhaust camshaft assembly to a tilt and pull free from exhaust camshaft actuator assembly (2).
    Fig 7: Camshaft Assembly
    GM2882180Courtesy of GENERAL MOTORS COMPANY
  16. Mark the intake camshaft rear cap to ensure it is installed in the same position. Remove the intake camshaft bearing rear cap bolts (1) and cap (2).
    Fig 8: Intake Camshaft Bearing Rear Cap Bolts And Cap
    GM2882179Courtesy of GENERAL MOTORS COMPANY
  17. Mark the camshaft caps (4) to ensure they are installed in the same position.
    NOTE: Loosen each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.
  18. Remove the intake camshaft cap bolts (3).
  19. Remove the camshaft caps (4).
  20. Lift and roll intake camshaft assembly from original position over into exhaust camshaft position within engine head assembly.
  21. Align and install camshaft actuator locking tool (2) EN 50793  into the slots of the intake camshaft actuator and mount tool to engine front cover assembly and tighten the bolts (1) to 10 N.m (89 lb in).
    Fig 9: Camshaft Actuator Locking Tool
    GM2882178Courtesy of GENERAL MOTORS COMPANY
  22. Remove the camshaft actuator bolt (1).
    Fig 10: Camshaft Actuator Bolt
    GM2882177Courtesy of GENERAL MOTORS COMPANY
  23. Remove the EN-50793  holding tool (2).
    Fig 11: Camshaft Actuator Locking Tool
    GM2882178Courtesy of GENERAL MOTORS COMPANY
  24. Pull intake camshaft actuator assembly forward away from camshaft assembly (1), then lift rear of intake camshaft assembly to a tilt and pull free from intake camshaft actuator assembly (2).
    Fig 12: Camshaft Assembly
    GM2882176Courtesy of GENERAL MOTORS COMPANY
  25. Replace the camshaft if necessary.
    NOTE: If replacing the camshaft, ensure to transfer any marking from the old camshaft to the new one.
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