Sqeaky noise on passenger side

I was driving my 88 Silverado 2WD and I noticed a squeaky noise on the passenger side. When i push down on the passenger side i can make it squeak. Could this be ball joints or shocks or what?

could be almost anything do you have a grease gun? grease everything with a fitting. look for leakage on the shocks. most squeaks are caused by old dried up bushings, try spraying penetrating oil on them.