High pitched sqeal?!?

[sloch24]

Originally Posted by JR.

EGR cooler gasket bad?

Is there a way to check it? ( The old "starter fluid" to the base gasket in small engines trick comes to mind, I'm wondering if there's a similar trick to check this out.)

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2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[sloch24]

Originally Posted by diablojoec

Just a quick thought, my tow mirror on the drivers side when flipped up whistles and i guess it could be called a squeel... Just an idea...

Thanks Joe

Bingo!

It's the drivers side tow mirror. I'm taking it to the dealer tomorrow.

Last week, I was driving around 45MPH, and the whistle was driving me CRAZY, so I opened the window, and it actually got LOUDER! So, I started feeling around the front of the mirror, and I found that if I put my hand in front of the mirror (around where the break away hinge is) it would stop.

I called the dealer, and they didn't have any information on it, but I asked, and they do have another mirror in stock. Lets hope they can fix it, it's REALLY annoying.

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2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[LittleOleHotShotter]

Originally Posted by txrlk

I've had the same issue on several occasions. It usually occurs when I'm accelerating but so far I've been unable to locate the source but I suspect that I have a boost leak.

Same here, cant find my boost leak at all. Happens under WOT and EB. Its not constant like this thread, but more of a singing noise. Couldnt imagine this whistle all the time. How do you look for boost leaks, i looked at all my plates, they are half inch. Been on truck over 100k miles no problems all of a sudden, its starting again. EGR cooler removal fixed my last squeal exactly as I am having again. ARGHHHHHHHHHHH

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