I have a 2002 ford expedition the other day my battery died on me I charged it then it died again when it was dying all the lights and speedometer went crazy they said I needed a new altenator so I got it fixed then I couldn't drive out the garage cause the overdrive button was blinking and the car feels like its dragging as if the brakes were on and im trying to drive. Can somebody please tell me what might be the problem? Also where it tells you the mileage a code came out T5.5 what does that mean? does it mean it needs more transmission fluid?