Transmission problem on 2008

I have a 2008 Toyota Tacoma pre-runner automatic. This morning when I switched it to drive there was a huge shutter and clunk noise. It Acted like it was stuck in second gear I took it to the dealership and he said he won't be able to look at it till Monday.... It's still under warranty but really Confused as to what it could be. I take excellent care of my truck, could it really need a new transmission at 59,000 miles???

 

Bump

 

Did you by any chance wash it yesterday and let it sit until this morning?

 

No, but it did rain hard last night.

 

I've read that washing your truck and letting it sit (or maybe after a hard rain) makes like the ebrake stick or the abs go nuts or something along those lines.

 

good read... http://www.tacomaworld.com/forum/2nd-gen-tacomas/226255-truck-wont-move.html

 

I was thinking that thread but was to lazy to looking it up on my phone Good post

 

I was a transmission helper about a lifetime ago. I'd like to get a breakdown on my tranny. But from what I remember the first problem would make me look at converter. But hanging up in second gear would have me looking elsewhere.