Van shifts into neutral driving down road.you kill it & crank and go a mile does same thing.Had it hooked to test got codes p1899-p0700-p0734-p1776po720

IT WANT GO INTO NOTHING BUT PARK,REV.NEUT.AND DRIVE. THE LIGHT LIGHTS UP AROUND EACH ONE OF THOSE GEARS ALL AT THE SAME TIME.BUT THE OTHER TWO.( LOW AND 3 IS LIKE THERE GONE.SHIFTER CAN'T FIND THEM. PLEASE HELP SOMEONE I'M 69 YEARS OLD AND I HAVE DOCTOR APPOINTMENTS TO GET TOO.