The car "jerks". Pulls to one side or vibrates?
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
If the car is pulling it may be a caliper...
Lite & rough shift.
What you describe sounds like a problem with the electronic part of trans such as solnoid in trans or wiring in, or outside the trans. a small amount of slipage will also put...