High pitched whir/whine coming from BACK of vehicle - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-09-2010, 10:52 AM   #11
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It'* a mechanical item made by people. It could be. Open the trunk the next time you hear it. See if it'* louder in there, just forward of the spare tire.
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Old 03-09-2010, 11:49 AM   #12
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Is a noisy fuel pump really a cause for concern? I hear fuel pumps on other cars all the time.
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Old 03-09-2010, 12:04 PM   #13
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It doesn't sound like a fuel pump(almost every vehicle I've driven has had a fuel pump issue, weird) I've ever heard.
Maybe the noise isn't a concern. It sounded pretty bad, especially when it went from quiet to noisy to quiet.

I'll see how today goes.
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Old 03-09-2010, 12:10 PM   #14
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When you hear it, put your hand on the compressor. That should tell you if it'* teh compressor. You might have a leaking strut.
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Old 04-01-2010, 07:09 PM   #15
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What does the compressor look like? The noise started again today. My vehicle does have the tire inflator control in the trunk, but never came with a hose for it. When I hit the ON button, it changes the noise.

So I'm guessing it is compressor? Is there a fuse I can just pull? Do I need the compressor? In between jobs and a 50 mile round trip drive to school, so I'm kind of limited as to what I can do at the moment.
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