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Anonymous Posted on Sep 17, 2011

Why do I get a rattling sound in the rear of my 2004 GMC Yukon Denali XL every time I start it?

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  • Posted on Sep 21, 2011
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It is the compressor to the shocks. It hapens when the shock has a leak. It's called air ride system. it's very annoying disconnect the power going to the motor behind the driver rear wheel or fix the air leak

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  • Posted on Sep 17, 2011
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It could be loose baffles in the muffler or one of the exhaust pipe supports is broken.....cheers.

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  • Anonymous Sep 17, 2011

    No the sound is like a electric motor running real loud, then it shuts off after about 30 seconds to a minute.

  • Anonymous Sep 17, 2011

    it may be the fuel pump

  • Anonymous Sep 17, 2011

    Cool Thank You! I'm gonna have my mechanic check it out.

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