01 silverado z71 belt squeal

[jvwilliams]

Hi guys I am new to this forum and im really frustrated. I just traded for an 01 silverado z71 with the 5.3, when I got the truck the belt was chirping and when u gave it gas it whould get quieter. I replaced both belts the idler pully and the tensioner pully and as soon as I start Iit squeal comes back so this past Saturday I replaced the water pump. Started it and no squeal for maybe 2 minutes. Took for a short drive and after warmed up no squeal at idle just when I give it gas. So sunday I replace altinator because it was chirping turning by hand. Once again on start up no squeal for only a couple of minutes then after warmed up no squeal at idle. Ive taken the belt off of a/c and still does it and I put the old belt on after changing the altinator and the squeal isn't as bad. Truck shows 410 + thousand motor suppose to have 140 thousand any advice is appreciated

[txab]

Are you using Gates or Goodyear Gatorback belts? Cheap belts can squeal.

 

Check the alignment of all pulleys to each other

[sahls01gmc]

Did it squeal any different with the new pulley(s) and belt? Could be a faulty pulley if so. What brand are the pulleys? I agree with the cheap belts theory, they can cause more problems than actually saving money.