[hognutz]

if you plan to mod the car just get a good deal and do it yourself.

People make more out of this that it is IMO. In my case my waranty is void becaue of mods if I want no rattle I will just add the 2.55 upper pulley and coupler.

now if you want waranty and are never going to touch the car look at the 14's with this fix.

GM only replaces the whole assembly and not all 13's are going to be noisy enough to get them to update. mine is there (it is there on all cars if you know what to listen for) but it is not loud enough to convince anybody to fix anyting yet.

so if you going buy a 13 just listen for the sound an see what you think of it. if you don't notice it much then your not sesitive too it. it is hard to know if the car is going to develope a loud enough sound for the dealer to repair it. some do and some don't.