Hiiiiiiiii; I'm hoping this is where to ask questions ,I have a 2015 Chev Silverado 3500 ltz Duramax. I have the parking assist function ,I disconnect my tailgate and put on a 5th heel tailgate with no rear camera. I'm wondering how to completely turn off this function,every time I stop backup come to a stop backup the display pops up saying check rear camera this parking assistis not working check. Do I have to go to a dealer and they hookup a reader to shut it off or is there something I can do from home . I thank you in advance fo any imformation you might be able to give me on this . THANKS AGAIN Randy