What is the cost to repair a neutral safety switch on a 2001 Chevy Malibu LS?

$100 for a new switch at Napa Auto Parts. Most neutral safety switches are a sealed, non reparable unit. If you are doing this yourself, I would recommend testing the wiring before replacing the unit since it is expensive. According to the Napa website, the safety switch on the 2001 Chevy Malibu does more tha simply close when in neutral, so I cannot give specifics. I recommend checking your local library to see if they have a copy of the shop manual. It will have detailed troubleshooting flowcharts to track down the exact problem.