Hey guys need some help with my 3 lt GU . Seem to have lost pulling power. The motor will rev freelly at standstill but has no power to accelerate underload ie when towing a trailer. The vehicle had been waiting for rear diff repairs to be completed. While this was happening battery went totally flat ( don't know if this is relevent). This problem was not there when vehicle was parked up awaiting repairs. Any suggestions would be appreciated.cheers Bruce
