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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1497 (Engine Mechanical - 4.2L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Timing Chain and Sprockets Removal

Timing Chain and Sprockets Removal

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the top chain guide bolts.
  2. Remove the top chain guide.
    Fig 1: Removing Top Chain Guide
    G02128677Courtesy of GENERAL MOTORS CORP.
  3. Remove the exhaust camshaft position actuator bolt.
  4. Remove the exhaust camshaft position actuator.
    Fig 2: Removing Exhaust Camshaft Position Actuator
    G02128678Courtesy 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.
    Fig 3: Removing Intake Camshaft Sprocket And Timing Chain
    G02128679Courtesy of GENERAL MOTORS CORP.
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