I'm on my 3rd rear diff and 2nd driveshaft and the dealer can't find this noise. Mine's at 45 mph and 58-62 mph, accel and decel, but louder at decel. Throwing a carrier bearing at it, don't know what else to try. AWR brace on mine is almost like a stethoscope to an underlying issue. I did some research on the FB group and this is an issue with all braces for a very small number of people. My '22 was dead quiet, in the '23 I can't cover the noise with the radio.