The vehicle may sit noticeably lower on one corner.
Yes
Yes.
Something broken in the suspension. Maybe just a worn-out shock absorber, maybe a broken spring.
Defective shock absorber , broken spring
Sounds like you may have broken rear suspension parts. Sway bar or spring may be broken.
Could be the dowel in the spring is broken off or lose u-bolts.
Depends entirely on what's broken, there are many parts in the suspension.
May be a broken spring or support
Tow it, a major attachment for the rear suspension is broken.
An air suspension is a form of vehicle suspension in which compressed air is used as a spring.
I would as it increases your stopping distance - I also have this problem on the front since rear impact on my jeep.
No, my garage door is not broken this spring.