Thanks, guys.
Have you checked the brakes? Caliper hanging up? E brake stuff sticking or falling apart?
I had the driver's rear caliper get sticky on mine and it'd vibrate a bit in the 45-50 range. Noticed extra brake dust on the wheel too. Just thought something to check if you think it's coming from the rear. Replaced it and it went away. Felt like driving over rumble strips. Hitting the brakes would make it go away.
A friend suggested that recently, so I tried applying the break at 65 when it was vibrating, and no change. All four corners have been apart within the last month, and all of the pistons retract just fine. The e-brakes are all new, wish I would have waited to do that job until I realized I was pulling the axle apart. Would have been a lot easier without those shafts in there.
Switch your rear tires left to right - see if the vibration switches to the other side.
Also check the rear driveshaft... ujoint, slip-joint, tcase output, check pinion for play.
I can’t feel a difference left to right with the vibration, and it doesn’t feel like any tire vibration I’ve ever had. The tires are worn, but have worn quite evenly. Might be something to check into, though. I’m seriously considering dumping this thing and grabbing a cheaper commuter car for the winter, if I choose not to it will be getting a set of tires. U-joints were replaced last week, no play or abnormal feel in front or rear pinion. Virtually no play at T-case slip joint, and front driveshaft is new. I even swapped the shaft out under warranty because I thought that was the cause.
Part of my frustration is I feel like this thing was a stupid financial move. My other car is a ’17 Pacifica, but at 25,000 miles per year it is cheaper to pile miles on an older car when I’m just running around by myself. I had an 07 Kia that was rock solid, and I sold to buy the Liberty. I wanted four-wheel-drive for the winter, and look how that’s turned out for me…
At this point I’m looking at what I’ve invested into it against what I could get out of it, and I may be better off cutting my losses and selling if it’s gonna keep nickle and diming me. Working on cars has been a small hobby of mine for the last fifteen years, but parts aren’t exactly free.