Shocks were not mentioned, a fresh set on my '99 cured the noises. I did check ball joints as they wear out, but mine had no movement.

BTW, the 4wd system is not all wheel drive or full time 4wd. It has an automatic setting that engages the part time 4wd transfer case when a speed difference is sensed between front and rear wheels. The truck is rear wheel drive, and there is no center differential as required by a full time system.