TrailBlazer 4WD L6-4.2L (2007)
Timing Chain: Service and Repair
Timing Chain, Sprockets, and/or Tensioner Replacement
Tools Required
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J 36660-A Torque Angle Meter
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J 44221 Camshaft Holding Tool
Removal Procedure
1. Remove the camshaft cover. Refer to Camshaft Cover Replacement.
2. Remove the engine front cover. Refer to Engine Front Cover Replacement.
3. Release the tension on the timing chain by moving the tensioner shoe in.
4. Place the tee into the tensioner to hold the shoe in place.
5. Remove the top chain guide bolts.
6. Remove the top chain guide.