[TinIndian]

I have a '07 G6 GT that I inherited from my 87 y/o grandfather when he past away in January. Yes, it's red because what other color would an 87 year old man drive. Within the last 2 months I've started noticing a high pitch whistle/noise when I accelerate. If I back off the throttle its goes away. I thought it was brakes at first but I get no noise when I brake at any speed. Only when I accelerate. Anyone have any thoughts? Haven't brought it in yet, want to see if its a minor fix I can do myself.

Thanks.

Mario

I've read the whistle is caused by a factory installed weep hole in the muffler that's designed to let water escape.

 

[TinIndian]

Wasn't the weep hole. Turns out my idle pulley is bad and that stretched out the S belt. Oh yeah, both my front struts are leaking, at 25,500 miles.......................

 

[TinIndian]

We've got a '07 G6 HTC as well and recently started experiencing a whistle or screeching noise when accelerating. We recently put on new rotors and pads so I first thought it was the brakes but then realize its only on acceleration.

I am taking in the G6 in on 9/22/10 to get the roof button replaced (pressing button would start retraction but stop after a few seconds which then required button to be re-pressed) - I've printed out this thread to show Dealer Service to have them check out my issue - I'll post results as well.

I've read the whistle is caused by a factory installed weep hole in the muffler that's designed to let water escape.

Wasn't the weep hole. Turns out my idle pulley is bad and that stretched out the S belt. Oh yeah, both my front struts are leaking, at 25,500 miles.......................

Take your pick!