What Causes Squeaking Suspension What Could Be Causing My Trucks Suspension To Squeak Everytime I Go Over A Bump? 99 S-10 ZR2?

What could be causing my trucks suspension to squeak everytime i go over a bump? 99 s-10 ZR2? - what causes squeaking suspension

Truck suspension or something screaming like a madman all reviews ball. zr2 with off-road package. I will fix, if it is serious or just a slightly cheap, because it makes me mad! is something where I need to replace something? or does something that it oiled? or what? Thanks