Random squealing from rear end in revers, low forward speed, and turning

[Truck Guy99]

05 chevy silverado 1500 2wd has a strange squealing sound coming from the rear end. When you put it in reverse it makes a squealing sound but only when it's rolling. When going forward at low speed it squeals but when you get above about 5mph it stops. It also happens when you make a somewhat sharp turn at speed above about 15 mph. We replaced the rear drums, front rotors, and front brake pads a few days after this happened and it continued. Old drums and rotors did not have any grooves indicating uneven wear, they were just worn thin from everyday wear. What could cause this squealing? It isn't the sound of brake drums or discs dragging (I know that sound a little too well from my last truck) but it definitely sounds like metal on metal

[kev63rod]

my bro had a had sub that did that and it was a tight/dry u joint. it was really annoying.

[95 S_Trucker]

How rusty are the backing plates?. Up north, they cause all kinds of strange noises when the rust.

[stroker87]

axle bearings? i had the same type of problem replaced the bearings

[Mr-Jack]

x2 U Joints...mine did that about a month ago, and I replaced them...no more squealing!

[CubFanMan1]

My truck did the same thing, and mine got worse as time passed. I had the U-joints and carrier bearing replaced, and the drive shaft balanced and now no more squealing.

[Truck Guy99]

How do I know if it's the u joint at the trans or the differential?

[CubFanMan1]

It doesn't really matter. The whole drive shaft will need to be removed to make the repair so might as well replace them both.

I put the rear end up on jacks and had a friend check to hear which one was making the noise while I put the truck in drive. Mine was the one up front.

[Mr-Jack]

get the good joints too and make sure that you chock the tires and set the e-brake

[Truck Guy99]

What joints do you suggest?