2003 Chrysler Town and Country jerking weird when coming up to a stop sign.

What is your question?

It's just like jerking or grabbing really hard right before I come up to a stop. I don't know if it's from down shifting from 2nd to 1st rough or if the brakes are locking up for a Split Second. I'm getting my PCM replaced because that's out I don't know if that can have issues with the brakes or the transmission locking up like that