I've got some RRO upper control arms installed in my 2019 Limited, for about a year now. There was some clunking sounds happening up near the front, which turned out to be loose UCA bolts which I just tightened. Since I tightened them, though, the clunking is gone but now there's a very loud and obnoxious creaking sound coming from the bushings. I can easily reproduce the sound just by standing outside the car and pushing down on the front end with my hands. Anyways, I'm thinking maybe the bushings are just dry and need grease. I didn't use any grease when I installed them, either (should I have? I don't recall the instructions saying to). Any thoughts? I don't want to grease them up and come to find out I shouldn't have. Likewise, I don't know if I should just slather grease all over them, or only in a few specific spots. Thanks
WK2-Overland
I did grease the ball joints by the way - they came pre-greased originally, and I just squirted a ton more into the grease fittings, but that doesn't seem to be the source of the noise. I'm 99% sure it's the two rubber bushings (where the control arms mount to the chassis) that are squealing. Those bushings don't have grease fittings, didn't come pre-greased, and that's the part I'm not sure if I'm supposed to grease or not (and if so, then where and how?)
Anyone have any thoughts or advice, before I take my grease gun and just start jamming grease all in and around the chassis bushings?
See the thread below for a possible source of the creaking noise.
www.jeepgarage.org
Fix for Front Chassis/Suspension Creak/Squeak
Creaking noise coming from the front of the vehicle, that goes through the whole body and might sound like its coming from the inside the cabin, associated with the acceleration and braking at low speeds, suspension going up and down at low speeds... The front sub-frame that holds the...
www.jeepgarage.org
So I found a YouTube video of a guy with a Lexus sedan of some sort, showing exactly the same UCA symptoms I'm having. He suggested spraying some silicone lubricant spray up into and around the bushings, and it seemed to immediate resolve his issue and he says the noise never came back after that. So I think I'm going to pick up a can of the stuff tonight and give it a try. Will report back here with my findings...
Update - I sprayed some silicone lubricant all over the UCA/chassis bushings, and also the sway bar/chassis bushings just for good measure (since it sounded like those might've been creaking a little as well). Hopped up onto my rock sliders and jumped around a bit to work the lubricant into the bushings, gave it a quick drive around the neighborhood, and the problem seems to be resolved! No idea how long it'll work for, but the giant can of silicone lubricant was only $6 and I'm just going to keep it in the trunk 
With that problem resolved, it's time to start working on creating some new ones We now resume our regularly scheduled programming over in my other thread about lifting my suspension more!
With that problem resolved, it's time to start working on creating some new ones
We now resume our regularly scheduled programming over in my other thread about lifting my suspension more!
I got here a day late. I was gonna suggest silicone spray. I used some to fix a creaking sound after my rro uca install. I also had to go back and tighten the bolts holding the ball joint in, they needed about another full turn each to tighten after about 500 miles. That helped get rid of a different creaking sound I was having.
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