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I know absolutely nothing about transmissions, so bear with me and I'll respond the best I can.
Question for the transmission gurus I'm NOT putting anyone on blast, so I won't be naming names.
I'm still in the middle of my tune. Was doing data logging to get sent over and everything has been basically perfect. Brand new built 6L90E and Circle D 265 torque converter. There are somewhere between 200-250 miles on the combo with 6-7 WOT pulls. Went to do some logging and everything looked ideal at first. Went down the highway and turned off the main road and it didn't want to move. I limped it home and changed the fluid, and it's very burned and has some glitter. But nothing on the drain pan magnet. I tried changing the fluid and got nowhere.
The car moves in reverse totally fine. At low rpm it shudders and doesn't want to move until I'm really on the gas.
Does anyone have any ideas what might be going on?
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brand new 6L90E revving instead of going 
