It started out of nowhere killing the radio and saying service 4x4. Now ive got 1st and 2nd gear and tries ro shift to third but its like nuetral. Had it put on a high dollar computer and its not throwing codes. Took a eide with it hooked up and its engaging the downshift solenoid instead of shift solenoid. Now the radio, blower motor,horn and headlights sometimes work and sometimes don't. I'm at a loss as to what's wrong with it.