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Re: Tune up: 03 Trailblazer
Posted to Technical Discussion Forum on 1/2/2007

Chris,

We have replaced a handful of those odd shaped coils for misfires and we resealed a few intakes. Valve cover gaskets leaking into the tubes are pretty common as well here. If the VCG is leaking, you need to reseal the intake anyhow. Good Luck! Login to read more.