Question about 2005 Chevrolet Trailblazer Ext

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Engine is making hissing sound.

My 2005 Trailblazer has been making a "hissing" sound -somewhat similiar to the sound the power steering makes when it's low on fluid but I don't think **** he power steering since it only sounds like that when I accelerate. I put the car on park(with the engine running) and pressed the accelerator without touching the steering wheel and it still made the noise.

Can anyone please offer some insight? -thanks

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  • 405 Answers

That hissing could be a vaccuum system leak, have youe tried pinpointing the sound from under the hood?

Posted on Feb 19, 2009

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