Strange subframe bushing question

[camccardell]

This is a wierd one. The rear 2 and front 2 subframe bushings on my 05 bonnieville are loose. Like I can move the rubber with my fingers when its on the ground or on the hoist. The rubber is not rotted out nor is the subframe itself. It has me very perplexed. Wondering if I should just replace them all.

Im used to installing them on other gm cars, and they always have to be compressed. These are as tight as they can get and the bottom washer seems to be resting tight against the steel inner sleeve.