LandShark2005

I recently bought this used 2017 Suburban Premier RWD. It has the option of side detect, rear detection and all the bells and whistles. It all recently quit working and come to find out the bracket broke and set the whole RH side detection module on the exhaust and melted it and all the harness together. I have identified most of parts I will need to replace, except for this one (see picture). It is coming out of the rear cargo area floor and comes out just behind the rear bumper area. Anyone know what this harness is for or even better the part number? Any help would be amazing. Thank you!