well i know mine does the same thing from 2-3rd and it only started happening when i lifted it again.....does it because my speedo is 10mpg off so when im traveling 40 my speedo says 30 and the tranny things im going to slow so it shifts down but i dont want to go faster then it goes back up... does it on the highway too if i go around 60mph shifting from overdive back down... could also be your tranny relearning your driving style because you unplugged the batteries... or it could be something more serious
