Get a can of silicone spray. When you hear the squeaking, go spray down all 4 of the spring isolators and see if the noise goes away after a few miles of driving. If the noise doesn't go away, spray the UCA bushings and go for a drive. Repeat process, spraying one component at a time until you isolate what's actually making the noise.
My rear end squeaks too lol
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
I was in the same boat as you. Mine were induced from my upper control arms. After installing the upper control arms, I couldn't stand the squeaking. I ended up unmounting them and packed them full of grease. So far so good no squeaks.
2006 Jeep Commander Limited, 4.7L, QDII, 4" Superlift Supension Lift, Procomp Xtreme Mud Terrain Tires 285 70R17, Mickey Thompson Classic ii Wheels 17X9, AEM Brute Force CAI, Superchip flashpaque, 4XGuard belly guard, 4XGuard Front Guard, Rear Grab handles and Defender Roof Rack.
I think Jedi Master Matt did it again...!!! He said he read that the Superlift read sway bar end links may squeak. Well, yesterday I had a chance to have a look. The bottom mount has what I can only describe as a kind of misalignment joint. It looked a tad bit corroded. So I tried my best to shoot some lithium grease in and around there. This morning's commute seemed pretty quiet. I will keep on observing and report back.
2007 Commander Overland / 4" SuperLift / 285/70R17 Cooper Discoverer ST Maxx / Rusty's adjustable rear UCAs / Carolina Driveline front drive shaft / Flashpaq / DRLs & Tilting Mirrors / Autolite Iridiums / Cobra 29LX Chrome LE CB & Firestik antenna / Rear fog lights / Mopar Grille Guard with HID driving lights
"4 wheel drive does not mean 4 wheel stop!" -Lee Goldberg, WABC TV weatherman
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