2010, with 65,000 miles.I'm getting a transmission "shudder" @ 1500-2000 RPM, 30 to 45 MPH, light throttle. Feels like rumble strips. Goes away when accelerating or pushing D3 button on shifter. Did the tranny drain and refill twice, 200 miles apart..Changed Tranny fluid 2 times before, rear diff fluid 2 times..Realize it may have to do with torque converter.. Anyone have this and a repair for the shudder.??.