I have been having the same problem since this service department did my brakes, one of them does not want to release, I have had the truck in 3 times and as of Tues this will be the fourth, same problem, I even went as far to bring in a heat gun to prove to them something was wrong and I thought that did it, nope, as of today after a drive to Edmonton heat gun read 520 F and you could smell the brakes , as yes I do have a witness, and it was only in the shop 2 days ago, said replaced some parts. that was the hottest reading so far. My truck is off the extended warranty soon and I am beginning to think that is why they just keep trying to band aid what is really wrong, so as soon as my warranty is up then I bet they can find what is really wrong hey . .and fast. I feel over a barrel that is why I bought the extended warranty ? They can say they brake work is covered but what about what is really wrong that is not going to be covered soon. Makes you wonder ???