Art b

i have a 2020 chevrolet silvarado lt trail boss and i wanted to get the navigation up grade check around,if you get the navigation sd card you still got to to take ta dealership and get your infotainment system flash for the navigation app,then hopefully you want have a issue with the sd cardnot being able to bring up the map.if you go to oddgenie you can get a gn nav programer for that will do what the dealership will be doing for 499 and you can reuse if you ever have a issues and lose the app if you take back to dealership and they do a update and you lose the nav app on your radio you can flash it back on instead of paying the dealship to reflash .right now i have a issue and i,m calling them to morrow i have the nav app but it want pull the map program up keep telling me to do a restart.that why i think gm decided to get away from these nemory card nav app causing to many problem getting to work right