I have an 07 yukon that I’ve had nothing but trouble with since I’ve bought it seems like. We used it to go trick or treating and piled all the kids in the back and drove with the hatch open so they could hop in and out as needed, got a service suspension light. A few days later got service stabile track light, service traction control and the park assist was turning off and on while driving as well as a flashing abs light. Twice while driving the speedo has quit working and when that happens it shifts REALLY hard into 2nd and pretty hard into 3rd. It’s completely random and sometimes you can hop in it and make your destination with no lights or problems, other times not so much. Replaced negative battery cable and have cleaned all chassis grounds with no success. Anyone else have this issue?