Question about 2005 Chevrolet Trailblazer Ext

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Only when i press on the gas or accelerate the enging makes a constant noise . when i tale my foot off the gas the noise goes away. i have a 2005 chevy trailblazer with 40,000 miles. i'm the only owner.please help

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A noise can come from anything that moves while the engine is running. What you really need to do is listen carefully from outside the vehicle with the hood open and try and get a better idea where the noise is coming from.
It sometimes helps to use a short piece of old garden hose as a directional listening device...one end on your ear the other end as a probe. Wherever you hear the noise the loudest, is likely the problem or very close to it. If the noise is an internal knocking, likely it is a bearing problem that requires intensive work to correct. Hopefully that's not what you are hearing, Oil pressure good? Serpentine belt tight?

Posted on May 27, 2010

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Posted on Jan 02, 2017

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