I took my 05 4Runner to the dealer at 110,000 miles for a transmission service. Since the service it has an odd sound / feel when I let off the accelerator especially at lower speeds. For example - when I slow down and it's shifting from 3rd to 2nd, it has a higher pitch sound for about 2 seconds then it sounds normal again. It also lets off an odd vibration and the tachometer jumps oddly. What the heck is going on with this? I'm wondering if they got the fluid level correct. It accelerates fine and otherwise drives normal. Any thoughts?