Q: service light wrench on 2002 Saturn LW300

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02 saturn lw300 service engine light came the one with the wrench tranny shifted hard pulled over turned car off then restarted no problem light off shifted fine the next day the same thing drove for about 20 mins or so light on shifted hard pulled over turned off then restarted no light on and the traction control light won't come on either
(1) Answer
Your computer has detected a malfunction in the drive system. Get it checked by a GM or Saturn specialist or a transmission shop.
If you want to find a specialist, here's a directory link for you: