Had new Shift solenoid installed (275.00 from Tasca) and PCM reflashed from dealer (75.00). My shop was able to do install (3 hours labor). Car runs and shifts like new. I had the intermittent bang when going into reverse and also a horrible down shift at 1100 rpm (2nd to 1st ? ). Really got annoying in stop and go traffic. It's a shame so many crap/defective parts came with this car from the factory.