Hi Judy, my last rental was a Nissan however, On Star Navigation can be found on most GM or Chevrolet vehicles. I believe the best way to determine is to ask them in advance if they have either Chevrolet or GM vehicles in their inventory for rental. Most newer vehicles allow phones to be connected therefore Google maps or Ways app would work hands free. Good luck!
I had a Chevy last time, I think it has OnStar.
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