Legal Question in Bankruptcy in Texas

You need to talk to your bankruptcy lawyer; that's what you're paying him for. Call his office, and if you don't get an answer in 48 hours, WRITE HIM A PAPER LETTER and lick a 44-cent stamp.

The answer to your question (probably) is:

If the travel trailer isn't subject to a title document, and therefore has no lien showing on the title, AND is exempt property (your lawyer can help you with this), yes, you can sell it.

If it DOES have a lien showing on a title document, you should write to your bank, tell them what you told me, offer to meet them at the storage facility at their convenience; if you don't get a response, haul the trailer to their parking lot one evening and leave it there.