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Old 02-04-2015, 11:49 AM
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High pitch whistle noise when letting off gas.

I did a search and found a few threads from 2 years ago regarding the issue. None really had a resolution to the issue. I was just wondering if anyone had the issue fixed. It just recently popped up on our vehicle. My wife is the primary driver, but I usually drive it once a week. I just noticed this noise earlier this week. This is not my video, but it is the same exact issue I'm having. The noise starts about :14 seconds in. For me it happens when the vehicle is coasting. The noise also doesn't seem to start until the vehicle is warmed up. I also turned off the hvac and radio and still get the noise.

Jeep Grand Cherokee (WK2)

Vehicle is a '12 Summit V8.

On a side note, I did just have the driver side axle replaced because the boot was leaking fluid. The dealer replaced it. The noise started about a week after this, but it could also be a coincidence as the other vehicles were low mileage that had the issue. My vehicle has a little under 35k miles on it right now.

Thanks.

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Old 02-05-2015, 11:12 AM
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Re: High pitch whistle noise when letting off gas.

Mines makes the same noise. Happened after they rotated tires.
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Old 02-05-2015, 12:31 PM
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Re: High pitch whistle noise when letting off gas.

Quote:
Originally Posted by My1stJGC View Post
Mines makes the same noise. Happened after they rotated tires.
Did you take it back to the dealer? Did they have anything to say about the issue?

Mine is temperature dependent since it doesn't do it right away after a cold start up. Once the vehicle is up to temp for 10 minutes or so, it'll start.


I'm really annoyed with the reliability of this thing. It hasn't left us stranded, yet....knock on wood. But just the fact its constantly at the dealer for fixes or recalls is just insane. I've never had a vehicle in the garage so much in my life. Never again.
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Old 02-06-2015, 05:47 PM
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Re: High pitch whistle noise when letting off gas.

No haven't brought to them yet. Got other things to do as well. I did record the noise as well to have them listen if it don't do it when I take it. Mines temp to. After let off gas makes noise on gas goes away.
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Old 02-07-2015, 11:38 AM
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Re: High pitch whistle noise when letting off gas.

Mine was determined to be gear noise. At 52k miles it has gone away.
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Old 02-09-2015, 11:37 AM
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I had the same issue on my '14 last winter. Tried working with the dealer, but they always cane back with the standard " We can't replicate the problem" and sent me on my way. It eventually got REALLY loud, and annoying, but any time I had the dealer involved it was pretty quiet. I finally got them to notice the noise, and I had to take them on a ride-a-long to get that far. They apparently researched Chrysler internal mechanic forums and decided that "it's normal". (It's NOT normal.) I took it up with corporate, but the noise went away on its own during the initial part of that process. Never returned. Then I switched dealers.
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