Rear end suspension squeak
I've got a nasty squeaking that occurs when I hit pretty big bumps in the road. Something like the seam between two different age road surfaces doesn't cause it, but a bulge in the road a few inches high causes a quick squeak from the rear end. I've replaced the lower control arm bushings, shock absorbers, sway bar endlinks, and sway bar bushings. The only stock suspension components in the rear are the coil springs, upper control arm bushings, and the track bar. Any guesses to what causes it, or what I can grease up?
I should note than when I did the lower control arm bushings I just ran the bolts on there with an impact wrench, and I didn't use a torque wrench. I'm not in a position to torque them now due to a recent injury, but that doesn't makes sense as the cause of the squeak, at least in my head it doesn't make sense.
1996 Grand Cherokee Limited 4.0L
PSC Steering Gear; NP249 w/ new VC; Moog TRE's, Track Bar, Stabilizer bar bushings and endlinks, control arm bushings
Still no lift, and almost no paint on the hood