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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1443 (Engine Mechanical - 4.2L (Ll8)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Timing Chain and Sprockets Removal

Timing Chain and Sprockets Removal

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of top Chain Guide
    GM637766Courtesy of GENERAL MOTORS CORP.
  1. Remove the top chain guide bolts.
  2. Remove the top chain guide.
    3. Fig 2: View Of Exhaust Camshaft Position Actuator
    GM637783Courtesy of GENERAL MOTORS CORP.
  3. Remove the exhaust camshaft position actuator bolt.
  4. Remove the exhaust camshaft position actuator.
    5. Fig 3: View Of Timing Chain & Sprockets
    GM637575Courtesy of GENERAL MOTORS CORP.
  5. Remove the intake camshaft sprocket bolt.
  6. Remove the intake camshaft sprocket.
  7. Remove the timing chain.
  8. Remove the crankshaft sprocket.
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