transmissionslipswhenenginelightcomeson on 1995 Saturn SL1

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
car runs good/when check engine light comes transmission wont change gears
(1) Answer
There is some kind of internal transmission problem occurring. It may be electronic or mechanical. A good diagnosis is in order to determine the fault.

Just in case, check your transmission fluid level and condition to make sure it is good first.