2011 malibu 2.4 liter flex fuel 6 speed automatic. I disconnected the battery terminals the day before I had the fluid changed in transmission. Now I'm getting shift flares randomly. Today and yesterday of this week and Thursday Friday of last week. I got ahold of dealer and told them what I stated above and they said it could take a few dozen drive cycles to relearn how I drive with the engine and transmission. I asked so it could be a few weeks and they said yes. Said if it gets worse or doesn't get better to bring it in. It did it before the fluid change but remembered I disconnected the battery terminals to clean them about a month ago. How long do you think it takes for a car to learn how you drive?