comes with a grease fitting and has a hole but this was removed during installation. Upon closer inspection, I found that the fitting was resting on hard metal. I'm assuming it's just defective. The bottom line is I can't be sure, so I can't finish the job, level the truck, and use it for work! and could lubricate the joint. See fig. Confirmed by compressing the download before and after watching Valvoline Juju. Maybe acdelco just supplies oversized DSLRs or something? Not impressed. Upgrading the star rating from 1 to 2 stars as I think it will work well but mostly because I'm glad my truck is back on the road.