Lately my rear suspension has been sqeaking on speed bumps. Just started recently. I don't offroad just occasionally tow a boat or Uhaul. Could it be a lubrication issue?

 

Sounds to me like bushings....

 

Mine squeaks on occasion on the rear passenger side upper shock bushing. Its done it pretty much from day one (lifted at one week old). I think the bushing was damaged during instal. WD-40 every few weeks cures it until I decide what shocks Im going to replace my crappy skyjacker ones with...