My 2004 Disco makes a stupid buzzing sound when reversing. It doesn't make this noise when I go slow in reverse but if I need to give it some gas then the noise kicks in. It's not a clunky noise it sounds like a buzzing bee similar to this thread that never got solved: https://landroverforums.com/forum/di...reverse-18366/

I got the t-case and diff oils changed at 86k at a Ford dealership last year. Currently has 91k on it now and engine runs extremely well. I have no idea why it would make this noise?

Any thoughts?