I have a 2003 limited with an auto trans and about 112k. I stopped at a stop sign and when i went to take off it was like it was in neutral. I thought I had bumped the shifter so I pulled it down into low and it went and I put it back in drive and everything seemed ok until I slowed to make a turn and it went away again and this time putting it in low didnt help. I coasted into a parking lot and checked the fluid, it was full and the fluid looked clean and clear no burnt smell. It would not go forward or reverse so I shut it off and restarted it and it went into reverse and drive. I took off again and as long as i was accelerating it was fine but as soon as i let off the gas it was back to neutral. Each time I would have to stop and shut it off and restart it to get it to go. The check engine light hasn't came on. Is it a solenoid problem or maybe the PCM?