brakes

just got new brakes on the 2004 tundra about 1000 miles ago but now while in reverse the brakes squeal quite bad. very anoying, any ideas.
thanks, rob

Find out which wheel it is and double check the installation. If it is discs, it may be that the calipers are not free side-to-side and are pressing one pad onto the rotor. If it is drums, they just may just need adjusting. Your parking brake may be out of adjustment also, causing the shoes to rub.