HELP Rear brakes squealing BAD!!

[skidsteer loader]

My truck only has 1800 miles and the rear brakes squeal terribly. Had the wheels off, everything looks good, rotors not glazed pads not worn, rotors dont appear to be warped. Any ideas. I dont feel I should have to have the wheels off of a brand new truck ALREADY. Dealer will be getting it back, just looking for some insight. Thanks.

[Turbo Al]

My truck has about 30,000 miles on it now and at the last tire swap I noticed that the rear brakes have far more wear and tear than the front which leads me to believe that there may be an improper balance from the valve that controls how much braking power is sent to the rear wheels. I have not had any drivability problems but chalk that up to a good ABS system.
They did squeek a little when they were new but not now.
Al