sorry for my bad English i turn off the AC then i turn on blover motor,when ventilation position to windshield, AC is runnin and air flow coming to face. windshield,foot and together position isnt run.Ummmm....A little confusing but I see you're from a different country so I understand. If u turn off the AC sometimes and it still runs that is normal. Both of my chevrolet's have done that. The other questions I can not understand
second problem, i turn on the AC, if i let to neutreal the gear idling is my truck is stopped.