So I start my drive home just fine. I shut the car off after driving for about 10 minutes. Start it 5 minutes later,starts off fine but then starts shifting hard. It was mild at first but kept getting worse until it set the SES light and then stayed shifting very hard and seemed to shift earlier then it normally would. I havent been able to pull the code yet but does anyway have any opinions. Ive had a slight shudder into 2nd before but it was a hot day and i had been stuck in slow traffic for 20minutes or so. then another time under the same condition, hot and slow traffic that the trans would not shift into second. both times shut it off and let it cool and it was fine. Slide note, trans is a fresh rebuild 5 months maybe 5000 miles, professional done.