A Technical Service Bulletin (TSB) is issued when a known problem or condition exists in a certain vehicle(s) and contains a repair for that problem. A TSB can also be issued to notify dealerships of diagnostic procedure changes, modified or improved parts or service manual revisions and updates.
TSBs are "Reimbursable within the provisions of the warranty". This means if the vehicle is within it's warranty period, repair as outlined by the TSB is paid for by the manufacturer. If the vehicle is out of warranty, the customer is responsible for the repairs.
If you would like to detailed information on the TSB's listed on your car, you can gain access to the AllData website for $26.95 for the first year. I have provided you with the most up to date listing of TSB's for 1995-2005 neon and SRT-4, they are not in full detail, but they will inform you of what the TSB or recall was about.
A Voluntary Recall is when the manufacturer recalls vehicles for a defect not necessarily related to safety. Any repairs made under a recall is paid for by the manufacturer.