When my rear end started to make that noise it was the rear-track arm control arms. There is really no way of checking them cause the play that the bearing cartridge develops is as thin as a hair but can cause ALOT of clunking and chattering from the rear end when going over bumps.
DIY - Replace Rear Upper Control Arms (Track Arms)
Che @ delubozparts Rear Track Arms GB $249.99 Shipped
Threaded Mode
