Originally Posted by Cat Ion
Should be a sensor on the tranny housing that engages when the reverse gear is selected. Don't remember the name of the sensor. Call Saturn parts dept. and ask what it is and see if you can locate it. Should just screw in and plug up.
yep, they're common to go out, at least somewhat. I already replaced one and it's been fine since. should be on the driver side on the back of the trans, two wire connector. can't remember the size wrench you need but want to say between 13 and 15mm. takes like 5 min to swap out if that.