Question about 2002 Chevrolet TrailBlazer

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Changing spark plugs

How do you get to the spark plugs on a 2002 trailblazer? There's a piece of plastic on top of the plugs.

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  • kapperkrew Jun 22, 2008

    how do you get to the spark plugs?

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There is 1 screw on top of each spark plug cylinder. Just remove the screw (I hope you removed the resonator first). The 2 plugs back towards the firewall are a little tougher to reach, just ensure when you put the new plugs in, that you do not crossthread them!

Posted on Jun 24, 2008

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I have a 2005 Chev Trailblazer it is running rough when idling. It needs a tune up but I have no idea where to even find the spark plugs. Also it is whining really loud when I'm driving its not the power...


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