found that the Dometic ref now has two fans in them to keep them working and the noise is the level of a firetruck siren about a half block away.
Others have complained of fridge fans (usually if the fridge is in the slideout). They've replaced them with quieter computer fans. Do a search.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10