Auto trans warning lights illuminated in dash Harsh gear shifts Improper / erratic transmission shifts Hard pounding between Park and Reverse Transmission slips into gear, but mostly from second to third gear Rattling noise coming from the front area when parked or neutral, with engine running The feeling of brakes applying by themselves in some occasions Transmission in limp mode unable to communicate with TCM using a scantool fault code U0101 - Lost communication fault code P0753 - Shift solenoid 'A' malfunction fault code P0758 - Shift solenoid 'B' malfunction fault code P0763 - Shift solenoid 'C' malfunction fault code P0768 - Shift solenoid 'D' malfunction fault code P0773 - Shift solenoid 'E' malfunction Other