help with roof problem

[clint243]

Hey guys I am new here and this will be my first post .....so here goes .....I have a 2005 Z71 extended cab with 17000 miles on the odo and I have had the passenger side rear window replaced 3 times for leaking air, and for some reason they can't seem to get it to stop .....well I was cleaning the roof the other day and noticed that ther was a lot of give in the roof panel ....like 2-3" so I took it to the dealer and they had never seen anything like that before and told me to take it to the local body shop. When I did that ..they had never seen anything like it before either and told me that most likely all they can do is replace the entire roof ......it appears that chevrolet forgot to attatch the roof braces during production.

Well with this being found out I went and drove another truck identical to mine and it was 100 times quieter .......so i am came to the conculsion that I ahve an enormus amount of body flex since the entire top of the cab is not connected to anything.....

When I went to the dealer and told them about removing the roof they said no way adn will talk to gm about replacing my truck for me. It is supposed to go into the body shop moday morning and they are goiing to remove the healiner and take a look at things but I do not know for sure what they think they can do since you can move the entire piece of sheet metal down 2-3" before you even touch a roof brace and I feel as if the metal itself has stretched ....and you can see ripples in the metal ........

What I am wondering is this something that has been seen before and what are my options if they back out on replacing my truck ....I fee a little unsafe driving it and I really am afraid if they replace the roof it will hurt the resale value of the truck .......any ideas or thought would be very helpfull....thanks in advance guys