My 3.6 auto will not turn over when I turn the key, nothing. The dash lights work, but the gear selector indicator shows all gears are engaged. Not the all grey, but all black instead. The day before, the car would start, but it was hunting for gears and then staying in 3rd or 4rth - but it wouldn't go back to 1st. Even after the engine was switched off. Any help is appreciated.