Idler pulley question

[forced-2-work]

I changed my idler pulley and the new one has a very slight wobble to it. It does not spin true. I am still hearing a chirp. Could this new pulley be causing the sounds still?

[eaglegolfj]

It could be, did you change the belt as well?

[forced-2-work]

It could be, did you change the belt as well?

Negative. The belt is only 2-3 month's old.

[hog_down]

What motor and what brand of vehicle?

[forced-2-work]

Silverado, 5.3 vortec

[Kingfisher789]

A/c Delco part?

[Pstraw]

If it's not spinning true, I would take it back. It won't fix itself.

[kingranch]

I had one that would whiirr at like 2500 rpm or so
Took me with a flat head screwdriver pressing on each one to figure it out but I think it was idler or tensioner actually
5.3 z71

[forced-2-work]

Not AC delco. But the more I look at it, I think it might actually be my tensioner is bad. It does not take much effort for me pull on the belt and see the actual tensioner move.