Diamondback
Ram Guru
I have not and I don't think too many people are "out of warranty" on them to do it themselves yet.
Mine were squeaking and my dealership changed the pads. Right after they changed the pads I took the truck to the back roads and bedded the brakes. Not the perfect condition (still had the original rotors with 9K miles on them) but at least I had new pads. It's a lot better but there's a little squeaking here and there.
Don't quote me but I think the brakes are only covered for the first year (and 12K miles maybe?). I'm under the year but over the miles so the next time I go in it will be on my list to see if they will revisit the squeak.
Moans are not just the 1st year -- as there are STAR CASES on them (in reverse that is).