Question about 2006 Chevrolet Trailblazer Ext

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Collapsed lifter 06 Chevrolet Trailblazer 5.3L DOD engine. Cylinder #1 misfire code P0301 with lifter noise. Upon removing drivers valve cover I found no movement on the intake valve rocker. I have searched to see if this is a common problem on the DOD engines and there is very little information available. The lifter was collapsed completely. The dealer stocks new lifters but there is no advice as to replace all lifters or just the failed one. Is this a common issue with this engine?

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  • Anonymous Mar 17, 2014

    valve lifter leakdown over night . excessive valve lash and noise .

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If it is higher mileage i would replace all of them since you are already tore down to replace one. it is not a common problem.You could replace the one and never have another problem just never know.

Posted on Jan 29, 2009

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Posted on Jan 02, 2017

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