Was hoping you would say it only does it when cold. But it sounds like the solenoid pack is starting to go. The problem is that usually this behavior also indicates that the front band is worn/slipping and the transmission needs to come apart.
I would take it to a transmission shop and have them take a look. It could be just the pressure sensors and solenoid. They are a common issue on that transmission.
Saturday, September 30th, 2017 AT 3:05 PM