Purchased certified with 15,478 and current highway miles 63,412. transmission exhibited symptoms of sluggishness and slowing down when driving my father to er for surgery. most miles are highway miles (mom-open heart surgery; spouse-brain tumor removal and dad-a colostomy). my spouse indicated the transmission bogged down slowly from 70, 60, 55mph down to 0 mph with no power to engage in any gear. spouse heading home with kids when van just stopped working and wouldn't move in any gear except park and neutral. called a tow truck at 10:45 pm. we paid the $150/diagnostic fee and trans fluid ok. tech mentioned needed a new $8,000/transmission-all the inner mechanicals stopped working.