Hello I'm new to this forum! I have a 2006 with 3.5 and nag 1 5 speed automatic. Recently it quit shifting! Unfortunately, I wasn't the one driving so details are not of my own. My son drove around the block and it wouldn't go into reverse or drive. Assuming it was knocked into manual shifting (autostick)! I tried it again. It shifted fine. Today I drove, again shifting like normal and then went home! Going to leave again and it quit shifting again. Maybe gear issue but I'm not an actual mechanic! Never had an issue with any vehicle shifting fine one minute and not at all the next! Any help or advice or anything is helpful!!