Would the ride of your car feel bumpy after transmission work?

What is your question?

OWn a 2003 Hyundai elantra with 110,000 miles on it. Took the car in one month ago due to a jerking caused at 45 mph and was told that I needed to replace the 02 and transmission input speed sensor. Did not correct the problem. Was then told needed new transmission. Installed tranmission with 25,000 miles on it, the output shaft seals, and the torque converter. This too did not correct the problem. Then replaced the transmission control module - problem corrected. However, after the month long wait for the repair, my car now seems to ride rough and hard, catching every small bump in the road. Feel Like I am riding in a jeep. What could cause this?