Review on ACDelco 36299 Professional Pulley Retainer by Jimmy Hargrove

I bought this pulley and two idler pulleys (anything that can be swapped out) for my Trailblazer SS. After 4 months, two out of three are squeaking like crazy! Two new AC Delco belts were also installed at the same time. I live in Wisconsin so I drive through snow, mud and car washes which makes it worse. Very disappointing! I thought an AC Delco would do?