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New Middletown, OH
two types.woven flex pipe is about $75 per foot,which most likely is what you need.regular flex pipe is $10 per foot and wont pass emmisions.
a trailblazer has a 4.2 litre engine.whats your question friend?
like someone has turn what?
is that a coil on plug ignition? if so those boots carbon track easily. plus dont use copper core plugs,those cop coils burn up plugs asap.
put a coat hanger up the pipe.that will clean it.
sounds like a faulty alternator or broken vacuum line to the pcv.
thats the upper ball joint.be very carefull.easier to fix then then bottom ball joint.dont hit pot holes or railroad tracks or better yet,dont drive it.it a $25 dollar part to replace as long as a dealership or independant shop doesent replace it.
posible bad ground connection to pcm and bcm.those codes show loss of communication to both computers.
in your case its usually not the egr valve itself.check for restrictions in the piping heading to the egr valve.
its the wheel seal.little bit labor intensive but if you got the tools and some car savy then no prob.