Prior to this most current fluid change, how often was it done. A transmission flush can bring on a problem to the surface that was not present at the time.
Go check you fluid, perhaps the fluid was not adequetly filled. Thus the problems and CEL being lit. IF it is low, do not add anything, but contact the servicing garage about it.
Original transmission at 160,000 miles may very well be ready to be rebuilt. Maybe a shift solenoid is bad. TCM. Wiring. Speed sensor.
Need the codes to better understand what the computer is seeing.
Tuesday, November 10th, 2009 AT 7:11 PM