Squeaky Noise From Under Hood

[joemanZ71]

i drive a 2006 chevy silverado 1500 Z71 crew cab with the flex fuel 5.3 V8. I recently purchased it, and it has under 45,000 miles on it. The truck runs awesome, just put exhaust and intake on it, however I have a re-occuring minor problem that i have with it. There seems to be some sort of squeaky noise coming from under the hood when i turn and accelerate now.... i had it fixed once, i believe warranty services changed an a/c belt or some sort of serpentine belt...however, the a/c works awesome and is very cold... it's very aggrevating, but it goes away once you get in a straight line, and/or give it some throttle, although if the throttle is pushed, it gets louder and more aggrevating until your in a straight line and it goes away! the truck runs fine though, no other problems, it doesn't seem to be affecting anything, still getting 17 mpg! wondering if anyone had any ideas and or solutions before i brought it back to the dealer! thanks so much! any help is appreciated!

[02silveradols]

Could be U joints. I had that happen to me. Same problems.