Question about 2002 Chevrolet TrailBlazer

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Timing chain replacement

At what mileage does the timing chain on a 2002 Trailblazer need to be replaced?

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  • Anonymous Mar 17, 2014

    at what mileage do you replace the timing chain

  • Anonymous Mar 26, 2014

    1998 trailblazer v6



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The timing chain on the Trailblazer 4.2 L is a metal chain. Unlike plastic timing belts that require replacement at certain mileage, this metal chain should be good for the life of the engine.

Posted on Oct 30, 2009


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No, timing chains are not expected to be replaced periodically like belts. Ocassionally they get noisey at high mileages and require a new tensioner pad but usually the chain is OK with a new pad

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