Just wanted to give an update, I decided to remove the turbo and clean the vanes since I couldn't move the actuator. This was my first time removing a turbo on a duramax and all I can say is it wasn't fun, pretty sure I invented 6 new curse words taking it. Glad I used pb blaster a few days ahead. Once it was out I split the turbo to find the unison ring stuck to the lip it sets on, had to pry it off with a screw driver. Shined it all up and coated it with coppper antiseize and put it back together and it cycles smooth as butter. Hopefully once it's back up and running that fixes the shuttering and improves a few other things (power,mpg,etc.).
2005 Chevy 2500 CC LLY 220000 miles
Profab EGR Delete
LBZ Intake Horn w/ Profab intake kit 4"
Straight stock exhaust
Edge CTS 2 Evolution (monitor only)
Kennedy Diesel Single LP w/ Wix filter housing BF1212 water separator pre pump