I removed the noisy 80mm fan and replaced it with two 120mm fans using the same wiring. Can't even hear them run and a big difference in cooling. Mounted both fans midway up the backside of the fridge through the top exhaust vent. Hard to get to, but well worth the effort.
2013 Silverado 2500 HD Duramax/Allison Tuned
Aviator Wright Flyer #1919
"First In, Last Out". 11B4Y
DAV, MOPH, VFW, 5/7 Cav,1/8 Cav Assoc.
11th ABN Pathfinder Co. N7MIP