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2002 chevy trailblazer_lt_ext
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Discussion Starter · #1 ·
After i take my trailblazer out and drive it pull it in somewhere to park... Alittle after i shut it off there will be a funny knock sound the seems to be coming from the exhaust rear of the truck... Any ideas
 

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2003 chevy trailblazer_ls
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1,708 Posts
If it happens right as you shut it off I would check for a broken hanger on the exahust pipe or the resonator.
 

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2003 chevy trailblazer_ls
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does it sound like small rocks hitting a piece of metal? ting ting ting ting....
if it sounds like this... then its normal.

Many cars exhaust/mufflers do this right after theyre shut down... the metal begins to cool and contract and it makes those sounds...

if its not that-- then do what the poster below me said...
 

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2002 chevy trailblazer_lt_ext
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Discussion Starter · #4 ·
it doesn't exactly do it right wen i shut if off maybe 10 to 15 seconds... and its not the ting ting.. its or like a klunk
 
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