Chev. 4wd Tranny?

[J.Stiles]

Can anyone tell me what the mechanic means when he says my "sun shield" is out in my transmission? It's a 97 model chev. 4wd automatic....its making a grinding sound and only goes in 1st gear? Thanks for any help!

[chevydragking]

it means you need a total rebuild

[nitrowarrior]

"Sun" drum is cracked or hub on drum is wiped out. It's not possible to tell that unless it has had a complete tear down.
Grinding is coming from a planet gear, if he's any good with his ears, he's "close" to the problem. As far as where the part failure is.
DragKing's right, it needs a tear down and going through.

[JeffB2]

Heres a pic, the stock "sun shell" is a weak link in a 700R4 replace it with this known as "The Beast" T.C.I. has these.