Lopesided Suspension problem

[drillingmachine]

My '89 suburban's rear passenger suspension is higher than the rest of the wheel well areas for some reason, I can't fiqure out why. The back leaf springs have the same amount of springs(5). I first figured this out looking at the front of the truck a while back, the driver side looked like it was lower than the other. I didn't think anything of it, I thought it was the driveway not being level. Then when I lowered the front 3 inches and the back 2(this was done because most suburbans are known to have that sagging ass look) that wheel well did not make too much of a difference, the lowering went well with all the other wheels but not that one. Can anybody tell me what the hell is going on?