2006 YukonXl Denali suspension clank

[KB06YUKONXL]

My rear brakes/suspension would make a metal on metal clanking noise when wet or cold when the brake was applied and then upon the next accelleration. The dealer service manager replaced the rear lower control arms and the clank is gone. They said they have seen 4 Denali XL's like this. I posted this in case anybody out there has the same annoying problem.