Sounds Like A Beater On Cold Start-up

[spf973]

My Avalanche is really starting to sound like a wheezy compressor upon cold start-up. I'm guessing it's belt whine but there's some "Chuffing" to go along with the annoying "chirping." It's LOUD and embarassing when alongside other cars at a light. This truck has only about 15K on it and the belt appears fine. The sounds do eventually go away, but only after about 15 minutes.....Any ideas?
Thanks,
JM

 

[mdmull]

Chirping noise is present on mine also, dealer has been no help. The belts have been replaced twice to no avail. I think that it must have something to do with pulley alignment. Since it goes away after warm-up, I haven't pursued it with a dealer, I can't take the stress of trying to deal with them.