ANSWERS: 2
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is the car an automatic or standard?if its an automatic then you have a ground issue it seems,pertaining to transmissin controller and gauges,most fame grounds are major grounds and located on frame rails in engine compartment and get rusted and make grounds inconsistant and cause problems such as that.saturn has multiple controllers(ecm)(tmc)and grounds are usually the problem,is it constant or just sometimes that this happens? more info for diagnostic needed
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Have the alternator checked. Sounds like the classic signs of the alternator going out.
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