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My 2003 trailblazer sounds like a jack hammer under the hood

When my trailblazer is running it sounds like a jack hammer

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6ya6ya
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Posted on Jan 02, 2017

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Ken17402
  • 615 Answers

SOURCE: Hello .. i have a problem

open the hood listen to where the noise is comming from I suspect pullys shut off engine .Get a full can of wd40 spray one pully at a time start engine after spraying each pully when the noise quites down or goes away that will be the pully you will want to inspect further or replace before it leaves you stranded. I drive a 04 crown vic great car ps while your there check your serpintine belt. shouldnt be cracked or missing teeth. about 30 dollars at napa easy to replace.

Posted on Nov 21, 2010

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SOURCE: 2003 Eddie Bauer Ford Expedition 5.4l just made

a spark plug may have stripped out and popped out of the cylinder head. Ford dealers are making lots of money fixing this common problem.

Posted on Jun 15, 2011

redbeard014617
  • 331 Answers

SOURCE: when my 2003 trailblazer is running it sounds like a jack hammer

Your symptom is vague. You could be talking about a bad lifter or crank bearing. A cracked/damaged flywheel or toque convertor could be to blame as well. Also a broken exhaust manifold or blown manifold gasket could be what your talking about too. Please write back with what you have inspected or tested so far. They sell a tool called a stethoscope. This tool is great to help pin point mechanical noises. Look into one, it may help you. Write back anytime if you have more questions, good luck.

Posted on Apr 13, 2014

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4 Answers

2003 trailblazer has new battery, but will not crank but all dash lights come on


Check the starter, check the cable that goes from the battery to the starter. make sure its tight and not loose. take a hammer and tap on the starter. If the vehicle still doesn't start. Change the starter.

Sep 02, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

My 2003 trailblazer sounds like a jack hammer when running and has no power, what could this be?


Probably a bad ignition module as it would seem that more than one cylinder would be dead in order to make a jackhammer sound. There are many other possibilities but much more information would be needed.

May 29, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

My 2003 trailblazer sounds like a jack hammer when running and has no power, what could this be?


Hard clunking and hard rap is you spun a bearing. A ticking sound its your lifters.

May 29, 2014 | 2003 Chevrolet TrailBlazer

2 Answers

When my 2003 trailblazer is running it sounds like a jack hammer


Your symptom is vague. You could be talking about a bad lifter or crank bearing. A cracked/damaged flywheel or toque convertor could be to blame as well. Also a broken exhaust manifold or blown manifold gasket could be what your talking about too. Please write back with what you have inspected or tested so far. They sell a tool called a stethoscope. This tool is great to help pin point mechanical noises. Look into one, it may help you. Write back anytime if you have more questions, good luck.

Apr 13, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

I own a 2003 Chevrolet Trailblazer LTZ. I am experiancing a squalshing sound coming from under the dashboard in the interior on the drivers side. Has anyone else expressed any concern or knowledge of this...


REMOVE THE DASHBOARD AND CHECK......but before that open your hood and check the alluminun tube line near the hydrovac maybe it touching just pull to make a clearace on it

Jun 25, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

2003 Chevy Trailblazer wont start


it sounds like your battery is dead charge it and try again if the starter still clicks it means it is sticking get someone to turn the key while you hit the starter body with the handle of a hammer which will free it of

Apr 01, 2010 | 2003 Chevrolet Trailblazer Ext

1 Answer

Clicking sound under the hood of my trailblazzer


Is it the AC clutch? put the defrost on with engine running and open the hood. listen for the AC clutch switching on and off. this is normal. its basicly on the AC compressor.

Feb 09, 2009 | 2003 Chevrolet TrailBlazer

2 Answers

2003 Trailblazer - taillight keeps burning out


Yes there are 2 places under dash or sides of dash and in the engine compartment

Jan 25, 2009 | 2003 Chevrolet TrailBlazer

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