Hi. I have the same problem. Don't know about driving not being able to shift out of second gear as I have taken the dash gauges out, disconnected the PCM and Drivers Multiplex control unit then turned the ignition to position 2 and immediately blew fuse 9 (third from the top in drivers fuse panel). I have the manual for my 2003 Acura TL but it doesn't identify the outputs of the fuse panel to the connector of the wire harness to the gauge assembly. I am still in the process of troubleshooting. Have any of the previous thread members rectified their problems? Any help would be appreciated.