Question about 2004 Chevrolet TrailBlazer

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Spark plugs I was going to replace my plugs in a 2004 Chevy Silverado 2500 HD 6 litre when I noticed a metal housing (maybe some kind of heat sheild) around the area where the plugs would enter the block. The wires are hard to release from this sheild. does the sheild come off with the wires or do they stay in place. I didnt want to tug real hard on the wires not knowing what may happen. Could you answer my problem and maybe a tip on how to remove? Thanks, Craig

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The heat shields are attached to head under spark plug. Need to turn boot on wire all around & then wiggle back & forth & pull upward.

Posted on Jul 13, 2010

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Posted on Jan 02, 2017

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hi im wes
the sleeve is a heat shield it keeps the manifold from baking the boot if you leave it off it will still work for a while it will however fail much earlier than if you put it back on hope this helps
thanks wes ps please rate me

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