The problem was diagnosed as a faulty Speed Sensor and Hydraulic Control Unit/valve body. They are having problems ordering the Hydraulic Control Unit...hard to find as they aren't made anymore. Does their diagnosis make sense to our more astute members? I WAS comfortable with the "O-ring and TCU diagnosis" by our contributing members! My radar is on high alert with this shop's diagnosis! I very well may Jack the car up when I get it back and take a look at the O-rings myself, just to be satisfied with this shop's diagnosis! Wait and see...