Help!!!!!

truck is sqealing when on. gets louder when i get on the gas. i replaced the belt, the AC pulley, and tension pulley. does anyone know what could be causing the squealing? please help!!!!

did you replace tensioner pulley or the whole tentioner.

might want to take belt off and check altenator to make sure ints not stating to seize up, and p/s pump, also wiggle idler pulley to make sure there is no play in bearing.