Here's what happens. Under medium to light acceleration, when I ease on the gas when I approach the speed I want to be at, the car shifts down, and it shudders until i completely let off the gas, or give it some more throttle.
Two things i'm going to do first.
1) Change the transmission fluid and filter
2) Check for error codes.
But i'm wondering if anyone else here has had this problem. I talked to a mechanic customer of mine and he said to do the two things above, but to research if anyone else has had this problem too to make sure.