hi all..first time posting. just bought a 04 tacoma 2wd v6 and the tranny seems to have a thumping sound everytime i stop the truck. i brought it back to the dealership and they told me it's normal and all u need to do is grease the u-joints/propellar shaft? can anyone please help me locate where the u-joints/propellar shaft is? many many thanks. i love the truck but this problem really suck everytime i drive it. much love for all your help. peace!!