Hi, I have a 2000 GMC sierra 1500 5.3L 4wd, I was driving down the road and hit a bump and all the gauges went to 0 except the voltage and oil pressure. The transmission also kicked out of overdrive and when I stopped the trans. would not downshift. When I tried to start it back up, it would not crank but I could hear the starter relay in the dash click but not on the starter. I have checked the ground to the engine, chassis and frame which all had ground. The odometer is also not working!! I just put a new battery in it about a week ago too! Please help!