The trans in my 2002 Ram 1500 w/360 auto has been acting up lately and flashed code P1762 and would ramdonly lose first gear. Aside from regular fluid flushes the trans is all orignal with 295k on it . My son replaced the govener sensor and transducer as suggested here on Moparts and now it has no overdrive and flashes code P0748 immediately on start up... even after clearing the code... and/or disconnecting the battery. I didn't see the work get done so only going off my sons words and he says everything looked good, with a clean screen, nice red fluid, no parts or pieces in the pan, wiring/connectors looked good and snapped tightly onto the newly installed parts. Any suggestions on where/what to look for? Thanks for any and all help