Originally Posted by Telly
Another potentially related deal is when I'm shifting a hard acceleration (like an on ramp) the rear of the truck shifts slightly, which would be flat scary on a icy road. I'm thinking Aussie Locker again?
Thats called "torque steer" and the only way to stop it is to ditch the aussie locker.
Does it make the noise when you are turning if the clutch isnt depressed? Try backing up & turning like you do but put it in neutral, let the clutch out and see if the noise is still there while coasting.
As previously stated, its most likely the aussie locker as they are really noisy when turning tightly on pavement. They will thump and click pretty good, every now and then it will let out a loud BANG! and you'll think you broke an axle.