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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1923 (Engine Mechanical - 2.4L) >> Repair Instructions - On Vehicle >> Camshaft Position Intake Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the camshaft cover. Refer to Camshaft Cover Replacement (LE5)  or Camshaft Cover Replacement (LAT) .
  2. Remove the spark plugs. Refer to Spark Plug Replacement .
    3. Fig 1: Loosening/Tightening Camshaft Actuator Retainer Bolts
    GM2066456Courtesy of GENERAL MOTORS CORP.
  3. Rotate the crankshaft clockwise and install the camshaft actuator retainer EN-48953  (1).
    4. CAUTION: Refer to Fastener Caution .
  4. Install the camshaft actuator retainer bolts and tighten to 10 N.m (89 lb in).
  5. Loosen, but DO NOT remove the intake camshaft actuator bolt.
  6. Remove the camshaft actuator locking tool, EN-48953  (1).
  7. Clean the timing chain and gears with solvent.
    8. NOTE: Ensure the timing chain and the camshaft position actuators are marked for proper assembly.
  8. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.
    9. Fig 2: View Of Upper Timing Chain Guide Bolts And Guide
    GM1578296Courtesy of GENERAL MOTORS CORP.
  9. Remove the upper timing chain guide bolts and guide.
    10. Fig 3: Identifying Timing Chain Tensioner
    GM412158Courtesy of GENERAL MOTORS CORP.
  10. Remove the timing chain tensioner.
    11. Fig 4: View Of Timing Chain & Chain Retention Tool
    GM2066475Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • The intake camshaft actuator should not rotate during the removal or installation.
    • Ensure the tips of the are fully engaged into the timing chain. The retention tool rod can be used on the back side of the chain to ensure the teeth from the retention tool are engaged.
  11. Install the timing chain retention tool EN-48749  (1) to the intake side of the timing chain.
    12. Fig 5: Identifying Timing Chain Retention Tool
    GM2134127Courtesy of GENERAL MOTORS CORP.
  12. Install the timing chain retention tool EN-48749  (1) to the exhaust side of the timing chain.
    13. Fig 6: Timing Chain & Camshaft Position Actuator
    GM1578297Courtesy of GENERAL MOTORS CORP.
  13. Remove and discard the intake camshaft actuator bolt (2).
  14. Rotate the exhaust camshaft clockwise slightly to take the tension off of the timing chain on the intake actuator.
  15. Remove the intake camshaft actuator (3) from the camshaft while also removing the actuator from the timing chain.
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