Truck Lock keeps unlocking, is it a short? Where is the short?

This morning I think I knocked some snow down into my truck unlock button. Is it possible for that snow to have caused some sort of short in my truck locking mechanism? Because now everytime I shut my truck and lock it, the lock releases, and continues to release, over and over; and over!! Therefore my truck will not and can not be locked. What can I do? How much will it be to fix it? Let me know if there is anything else I need to know. Thanks in advance!!

Try looking at your key fob, sometimes my button sticks closed and hatch kept doing what you have. Also you can unhook wires on swtch on latch and use your key manually!