are your rotors glazed ? (looks like a mirror ?) if so she problly just got them to hot with a panic stop.. what you need to do is resurface the rotors and sand the pad surface down.. also if your using semi metalic or metalic pads then your almost gaurenteed a squeel.. those truck need organic or ceramic. i perfer ceramic.. and its problly only squeeling after the rotors get hot..ie driving stop and go traffic or down hill riding the brakes.. id bet money that they dont squeel when the rotors are cold..
if it were a u-joint it would do it all the time.. not only when braking
TLCA # 20314
84 Hilux, 22re Conversion, 63" chevy rears, Rears up front, Bobbed bed, duel e-lockers, 5.29's, 35" Ground Hogs
Step by Step Bed Bob