FYI just brought my car to the dealership last friday and they fixed the squeeky belt problem on my celica. i had a nice experience on this, I did not even put my stock airbox back (had an Injen SRI)
Dealer : North County Toyota
Place : Anaheim (Orange County in SoCal)
Svc Advisor: Cesar(look for him)
Correction : Replaced Belt & Tensioner Assembly
Others : Even had a loaner car for a day (04 Solara)