Unsticking a stuck Rancho?

It is not really the knob that freezes, it's the plate that the knob pushes down on. You can attempt to free it by removing the 2 screws that hold the knob on the shock and spray some anti-seize in there and push down on it with a flat head screw driver or something. It should spring back and forth when pressure is applied to the plate. If you do not get the back and forth movement then your shock will definitely need to be replaced under warranty. I am on my 2nd set of rancho shocks because of corrosive road brine getting into that adjustment knob & plate. The 2nd time i used some waterproof grease before reinstalling the replacement shocks and so far have had zero issues with the shock adjustment knob. I did a youtube video on how i did this as well Rancho shock rust prevention