My 2004 crossfire w/ 125K miles leaked a LOT of transmission fluid onto the garage floor while I was away for 2 weeks.

The AAA approved transmission repair shop said I need to have parts replaced for $510!!!

He explained to the foolish woman that the plate under the transmission box needs to be replaced because the leak goes through it to the rings. He said he won't charge me for labor, but the part is expensive. He ordered the part Friday and I am supposed to go in Monday morning to have the work done.

Please advise me - is this a possibility or do I really only need a $9 O-ring replaced?

Kristinjsharpe@gmail.com