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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.0L (LSY)) >> Repair Instructions >> Camshaft Carrier Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Air Cleaner Outlet Intermediate Duct - Remove - Air Cleaner Outlet Intermediate Duct Replacement
  2. Air Cleaner Outlet Duct - Remove - Air Cleaner Outlet Duct Replacement
  3. Starter - Remove - Starter Replacement (LSY)
  4. GM5164169Courtesy of GENERAL MOTORS COMPANY

    EN-52476  Flywheel Holding Tool (2) - Install

  5. NOTE:

    The timing pin (3) is installed into the flexplate for engine timing procedures, it can be damaged if torque is applied to the flexplate with the timing pin engaged. The timing pin must be placed in the retracted position using the handle (1) and twisting to locked position. The slide part (4) is to be installed to the flex plate when torque is applied to the flexplate or crankshaft balancer bolt.

  6. Ensure the timing pin (3) of the EN-52476  Flywheel Holding Tool (2) is installed to the automatic transmission flex plate.
  7. Positive Crankcase Ventilation Tube @ Camshaft Carrier - Disconnect - Positive Crankcase Ventilation Tube Replacement 
  8. Fuel Pump - Remove - Fuel Pump Replacement
  9. GM5059988Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Front Pipe Bracket (1) - Remove - Fuel Feed Front Pipe Bracket Replacement

  10. Positive Crankcase Ventilation Hose - Remove - Positive Crankcase Ventilation Hose/Pipe/Tube Replacement 
  11. Ignition Coil - Remove - Ignition Coil Replacement
  12. Camshaft Cover Heat Shield - Remove - Camshaft Cover Heat Shield Replacement 
  13. GM5115048Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Heater Exhaust Pipe Bracket Bolt (1) - Remove

  14. GM5115188Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Camshaft Carrier (3) - Disconnect [8x]

  15. Retainer (2) @ Camshaft Carrier (3) - Disconnect [9x]
  16. GM5517387Courtesy of GENERAL MOTORS COMPANY

    Camshaft Cover Bolt (1) - Remove

  17. GM5150021Courtesy of GENERAL MOTORS COMPANY

    Camshaft Sprocket Bolt (1) - Remove and DISCARD [2x] - Camshaft Sprocket Bolt Replacement 

  18. GM5127075Courtesy of GENERAL MOTORS COMPANY

    Mark both actuator sprockets (1), timing chain, and the camshaft housing cover from the center of the bolt upward as shown with a paint marker or equivalent to help with installation.

  19. GM5002079Courtesy of GENERAL MOTORS COMPANY

    Bolt (3, 4) - Loosen

  20. GM5002080Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Hold the camshaft sprocket firmly and squarely during camshaft sprocket bolt removal/installation. Failure to do so may result in damage to the inside of the camshaft sprocket.

    Hold the intake camshaft sprocket (1) from underneath the EN-52461  Cam Phaser Torque Reaction Tool (2). Pull the EN-52461-1  Holder away from the engine to release the intake camshaft sprocket (1).

  21. GM5002084Courtesy of GENERAL MOTORS COMPANY

    Hold the exhaust camshaft sprocket (1) from underneath the EN-52461  Cam Phaser Torque Reaction Tool (2). Pull the EN-52461-1  Holder away from the engine to release the exhaust camshaft sprocket (1).

  22. GM5431937Courtesy of GENERAL MOTORS COMPANY

    Timing Chain (1) - Reposition

  23. Inspect the timing chain guides and replace if worn down to the base material.
  24. GM5152606Courtesy of GENERAL MOTORS COMPANY

    Loosen the 2 bolts (1, 4) of EN-52461-100  Adapter Cam Phaser Torque Reaction Tool (5).

  25. Remove the EN-52461  Cam Phaser Torque Reaction Tool (5) along with the 2 EN-52461-100  Adapter Cam Phaser Torque Reaction Tool (2, 3) from the engine.
  26. GM5034489Courtesy of GENERAL MOTORS COMPANY

    Camshaft Carrier Stud (1) - Remove [14x]

  27. Camshaft Carrier Bolt - M6 (2) - Remove [4x]
  28. Camshaft Carrier Bolt - M8 (3) - Remove [5x]
  29. GM5034491Courtesy of GENERAL MOTORS COMPANY

    Camshaft Carrier (1) - Remove

  30. Camshaft Cover Gasket (2) - Remove and DISCARD
  31. Clean, inspect and overhaul the camshaft carrier as needed. Camshaft Carrier Overhaul