Mechanics

SQUEALING NOISE

2007 Pontiac G6 • 6 cylinder FWD Automatic • 58,000 miles

I have a 2007 Pontiac G6 hard top convertible; it makes a loud squealing noise when I accelerate. Stops when it down shifts. Could this be a belt issue?
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Jkamke15
March 29, 2011.




Yes could be the belt you could have a weak belt tensioner is the noise worse with the a/c on?

Saturntech9
Mar 29, 2011.
I am not using air (live in Wisconsin). It happens when I accelerate and as soon as it backs down it stops. Leak in a hose?

Tiny
Jkamke15
Mar 29, 2011.
Sound's like you could have a weak belt tensioner that's what keep's your drive belt tight. If you have a/c on your car an it work's turn it on and see if the noise gets worse.
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Saturntech9
Mar 29, 2011.
Did you ever get this resolved?

Tiny
T5825db
Jul 18, 2011.
It seems to be known issue with resonator on the G6 HTCs. (G6performance. Com) Maybe because of the exhaust's size, anyway had the same problem, whistling noise under acceleration between 2000 - 3000 rpm but no other time. Checked belts, tensioners, etc, etc, no joy. No longer under warranty I had a Magnaflow 10424 put in and that fixed all the weird noise, just sounds good. Good luck!
-jon

Tiny
X44+
Nov 22, 2011.

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