My saturn was running fine. Then it would shift very hard

well if it shifts very hard into every gear that means the pressure control solenoid in the trans went bad and it causing the trans to go to max line pressure thats why it shifts so hard,,,it does that so you can still drive it even thou it broken,anyhow the PC solenoid is under the trans pan which is on the TOP of the trans under the battery,,,,not too hard a job to do, the parts are about $100 labor might be about $200,,,easy fix,,could be alot more,,,and if you dont fix it ,it will break other stuff in the trans and cost alot more,,,