Truck has been fine all day today. Installed a new filter and Sonnax Tricumulator/sure cure 2 weeks ago. Romped on it from stop to 65mph just before I got home and noticed this whine when I got home. Does it in park and neutral, RPM dependent, and goes away in drive unless decelerating using "engine braking". Truck still shifts fine through all gears being gentle on it, too afraid to beat on her anymore.
Here's the video
https://www.youtube.com/watch?v=CcTq8XtZDA8
Here's the video
https://www.youtube.com/watch?v=CcTq8XtZDA8