1) They probably have a CD that was licensed to the VIN number. It all depends on how long ago that vehicle was "born" and left the plant. With the sluggish full-sized SUV sales that could have been a while ago. HOWEVER, that being said, I would think that perpetual upgrades would be available. Check the chevy website or call GM, they might help you out. The disc probably costs the dealership $$, but you might be able to get a comp.
2) Sounds like a usability design-flaw ... bad programming. This may be updatable with firmware, but probably not.
3) I had no idea that would be a requirement. The little pocket-nav systems don't require a CD, they either load via GSM/EVDO cellular data connection or they just have little hard drives on them. Any stock NAV system I would think to have a hard drive or 1GB flash memory at least.
4) Most all backlit displays have a way to dim. Nothing in the users guide?
2) Sounds like a usability design-flaw ... bad programming. This may be updatable with firmware, but probably not.
3) I had no idea that would be a requirement. The little pocket-nav systems don't require a CD, they either load via GSM/EVDO cellular data connection or they just have little hard drives on them. Any stock NAV system I would think to have a hard drive or 1GB flash memory at least.
4) Most all backlit displays have a way to dim. Nothing in the users guide?