Belt squeal(or so I thought)

[packfootball]

I have 06 Yukon xl, squeal coming from somewhere, can't find it. I have replaced all belts and also replaced idle and belt tensionors. What am I missing? I will say when car is running spray with belt dressing squeal will stop for about 5 minutes. Please help this is driving me crazy

 

[domin8]

Are the pulleys aligned properly? None of them wobbling?

 

[Yukon&Tahoe]

You replaced both belts (Serp & AC belt too??)? Did you replace them with a "good" belt (Goodyear Gator Back's!!!!)????

 

[packfootball]

As far as I can tell all pulleys are ailigned.

No, to using gator back belts, used the best offered at Oriellys

---------- Post added at 04:13 PM ---------- Previous post was at 03:30 PM ----------

Power steering pump shaft, should it be flush with pulley or sticking out of the pulley(around an inch)?

 

[bkboatnsleds]

What about AC belt - way down low? It could also be that tensioner pulley gone bad..

 

[kmccart]

I have the exact same problem with my 2002 Yukon SLE. My husband has changed all the belts (including the ac belt) changed the pulley's and tensioner's, ALL OF THEM, even changed the clutch fan which shut it up for about 2 months......ran it through the car wash today, and it is right back to screaming!!! Any idea's???