Finally fixed. I have been going through an issue with a rear end worbel sound on my new 2019 corvette since new. It has finally been resolved. Thanks to Mike Forgione, service manager at Brian Cullens in St Catharines. Truly a breath of fresh air to hear someone that gives a crap. I was tired of hearing, that's the way it is. My neighbor had the same problem and my fix worked on his car too. Parts ordered 4 11611051 bolt 070140 , 1 23341259 seal 058220, 1 84705711 cover 053980, 1 23347669 seal 055080 , 3 88862625 fluid 088000 Removed rear carrier assemble, inspect d ring for cover replace, reinstall new axel seal and snap ring, reassemble unit. No worbel sound has been detected since the repair was done. This noise was very irritating and progressively getting worse. I was very worried that this was a "learn to live with it" experience. This had happened to me before. Kudos to Mike for caring about my experience. Now I love driving the car.