I am sure that most of us do not understand your question. You are taking it to S.A.? If you are, are you wondering about the right map? The nav will work wherever you are, you just need the right map program. You will need to get a hold of navtec to see if they have the right map, I'm not sure it is something GM will have in stock.
Schram is right..you need a navigation program that has a Saudi map in it.
Maybe you're best bet is to buy local in Saudi...there are quite a few aftermarket nav systems that fits like OEM, but perform and look better than stock..i'm not sure though if nav systems are a "thing" there, though.
i bought my car from Saudi Arabia as well, two months ago i have purchased Kenwood 8019 with Garmin Nav system, bluetooth and rear camera, i didn't have time to install it until now but i know a friend who has similar system installed perfectly in his car, so there you go, aftermarket will work fine and if you are concern about MAP of Saudi and gulf, it's available in a place called Dar Mojah, google it.