Originally Posted by 201firefox
Just replaced 2 passenger side legs stopped the popping.
Also recheck the auto leveling.
Hopefully the jack replacement wasn't solely due to the popping & if so hopefully it was under warranty, as the oil change procedure takes about a 1/2 hour & $25+/- for a quart of 1 of the oils shown above & works well.
Mine was with the 15w Maxima fork oil & ended the popping/creaking. I also used a the Lynx Levelers under each every stop with more added to the low side.
FYI! The jacks are usually able to be rebuilt at a hydraulic shop or heavy equipment repair shop for a fraction of replacement cost.