Did 2nd gen4x4 Blazers originally come with lower ball joints that have no grease zerks, but were bolted on with bolts (not rivets)? I see a place for the fitting to come through the control arm but no grease fitting (or place for it to screw into the ball joint). Upper ball joints have grease zerks, as do everything else in the steering - seems strange no lower ball joint grease fittings. I'm used to factory ball joints being riveted on so I assumed they had been replaced. Please advise.

 

To my knowledge all factory ball joints were riveted and I am pretty sure they had grease zerks. I've put new sets of control arms in two of mine. Even the moog replacement control arms came with riveted ball joints. Well the non serviceable joints came riveted, the greasable ball joints came bolted in.

Interesting side note: It was cheaper to buy the lower moog control arms with the non serviceable ball joints; remove those ball joints and replace them with greasable ones, than it was to purchase new moog lower control arms with the greasable joints bolted in...