Thank you for the donation.
There are many possibilities for it to occur and I would suggest getting the PCM scanned to retirieve for trouble codes.
Was transmission in working order when it was parked?
Transmission are known to fail after sitting for extended periods. Once you can get it moving, it might work.
Did you try shifting through all gear ranges?
Did you allow the transmission fluids to be warmed up to operating temperature before retesting if it works?
Wednesday, November 10th, 2010 AT 9:51 AM