squeel sound when shifting?

[ryan34]

Ok, ever since i got the madz28 tune, when every my car shifts hard....I can hear a squeel sound. I thought it was the tires chirping but i don't think thats it. It doesn't really sound like its coming from the rear, and it almost sounds like a squeaky fan belt. But its only for a split second when it shifts. Any ideas?

[DJ Taso]

It's your serpentine belt. My car did the same thing when it was an A4 and power programmed. It's very common on these cars. Whenever it was ready to shift I would take pressure off the pedal and I would hear it slip.

[BadWS6]

The belt on my bird will slip during hard shfts (auto) when the air is on (just sorta chirps)but only when I am on the throttle hard

[ryan34]

So everythings fine then? No need to replace anything? I was beginning to get worried

[DJ Taso]

So everythings fine then? No need to replace anything? I was beginning to get worried

It's more like a nuisance than a problem. If you can live with it then you'll be fine.

[WhiteSmoke]

Hmm my z28 does the same exact thing when it shifts hard, it sounds like the belt slips, if we replace the belt will that stop the noise?. I was starting to think it was my tentioner.

[fastTa]

Replace your serpentine belt with a Goodyear Gatorback belt and it will likely go away.

[BadWS6]

I have the gator back belt and it will still squeal If I turn off the air then no noise during the shifts ..so if I know I am going to get on it I turn off the air

[ryan34]

The belt still looks good, so i'll just deal with it for now. It doesn't really bother me, i just thought there might be a problem. I'll change when its needed. Thanks guys