3400 motor and car ran great parked hr later went to leave and no forward gears reverse works any idea maybe solonoid?

. Check all under hood and under dash fuses with a test light or multi-meter.

. Check/replace the Neutral Safety Switch (Transmission Range Sensor).

If the you have not dropped and cleaned the pan and magnet, changed the filter, and replaced the fluid every 30,000 miles, one or more clutch packs may be shot.