Squealing noise

JKAMKE15

MEMBER
2007 PONTIAC G6
6 CYL
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?

Tuesday, March 29th, 2011 AT 9:09 PM

5 Replies

SATURNTECH9

MECHANIC
30,870 POSTS

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

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Tuesday, March 29th, 2011 AT 9:34 PM

JKAMKE15

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2 POSTS

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?

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Tuesday, March 29th, 2011 AT 9:39 PM

SATURNTECH9

MECHANIC
30,870 POSTS

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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Tuesday, March 29th, 2011 AT 9:43 PM

T5825DB

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2 POSTS

Did you ever get this resolved?

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Monday, July 18th, 2011 AT 11:34 PM

X44+

MEMBER
1 POST

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