Our son's 2017 Volt built-in Navigator displays correctly but ours doesn't. It only shows a thin strip of the map and two lines of Radio Pre-Sets. We have gone over the Settings numerous times ... to turn off the Radio Pre-Sets to NO AVAIL!
What do we have to do in order to make the map useable?
Dealer Re-Set or Firmware Upgrade?
What do we have to do in order to make the map useable?
Dealer Re-Set or Firmware Upgrade?