from the manual: Tow/Haul – For improved transmission operation when towing a trailer or a heavy load. This mode moves upshifts to higher engine speeds to reduce the frequency of transmission shifting. This mode also provides engine braking in all forward gears, which slows your vehicle and...
Yeah those wait time are loooong but it will be worth it. Good luck with your build. 1) We dont use either xm or gps. We use mostly phones/tablet for music and navigation We have the att wifi and that works fine. 2) Yes we were able to use the back camera from the original box as well as back up...