Just got around to refreshing the rear suspension. Shocks and air springs were previously replaced. Replaced all 4 upper control arms, integral links, ball joints, and sway bar end links. Did not replace axle carrier bushings because it's beyond my ability. Didn't replace lower swing arm inner bushings because you can't buy them separately and the swing arms are very expensive.
Brutal job. Bolts holding upper control arms to the rear axle carrier were seized into the control arm bushings. Had to cut them all off with a reciprocating saw. Went through about 20 metal cutting blades in the process. Needed to pause a few times to consult a thesaurus, as I had run out of 4 letter words.
Replaced tie rods also because I apparently didn't get enough punishment in my freezing cold garage. Getting an alignment tomorrow.
Initial test drive around the block was much better - side to side sway from the rear is greatly reduced. I'll know more after a longer test drive after the alignment.
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