I've read through a few of the old post but pretty much tried everything. Anyways I got a 2015 yukon xl denali that keeps giving me Service park assist, Service cruise control, and on my screen when I reverse it says rear park assist unavailable. Now I bought the vehicle with no front bumper and the cruise control worked fine till I put a new bumper on. Since it didn't come with a bumper the front park sensors are all new and the wire harness that goes to them. When I put the front bumper on I lost cruise control it is the ACC. I got a bi directional scan tool and it says voltage out of range on the front. If I clear the codes I can turn the sensors on and they all work till I engage any gear then they short out. I've replaced the sensors with new ones and same issues persist. I've cleaned the grounds at the wheel well both driver and passanger and the A pillar of the drivers side. I've checked fuses. I've replaced the control module and nothing seems to be working. My scan tool says the ACC module in the front bumper is calibrated but maybe I should go get it recalibrated? Any help is needed.
Also, The screen has a black box just when I have media setting brought up. Any known fix for this? I can get pictures later. Also, I bought this car used but is there a way to play the media from the screen on the rear speakers while I can listen to my own music at the front? They didn't give me any headphones for the screens so not sure if this is possible as well. Thank yall for the time reading.
Also, The screen has a black box just when I have media setting brought up. Any known fix for this? I can get pictures later. Also, I bought this car used but is there a way to play the media from the screen on the rear speakers while I can listen to my own music at the front? They didn't give me any headphones for the screens so not sure if this is possible as well. Thank yall for the time reading.
