Squealing sound when accelerating

[Brad Mc]

Hey guys, I'm new to the forum. Purchased an 18' Sierra about a month ago so I'm still learning about the ins and outs of the truck. Recently started noticing a squeal type of sound when I accelerate. I have only noticed the sound just after starting the truck up, it only happens when I accelerate, and it typically only lasts 2-3 min max. I'm thinking belt, but wanted to see if you guys might have any input or have dealt with something similar. I have contacted the salesman and they're going to look at it, but I'm just curious to see if anyone might have a suggestion before I take it in...you can kind of hear it at the beginning, but it really picks up at the 16 second mark. 

 

 

 

[lonestardiver]

Bearing on an idler pulley or belt tensioner pulley can do that.