Raise your front end off the ground and put up on jack stands for safety. With tire off the ground grad it with one hand at the 12 O'clock position and the other at the 6 O'clock position and pull it in and out and see if it moves and seems loose. Do this again at the 3 O'clock and 9 O'clock positions and see if it moves or seems loose. It should be firm with NO looseness. If it is not firm, this could be a sign of a loose or bad wheel bearing. Take off tire and remove the cap on the wheel hub and see if the bearing nut has come loose. On a truck of this vintage there should be a cotter pin going through a groove in the nut that goes through the end of the axel threads.

While under there check out the end of the tie rods for looseness. There may be rubber bushings that are worn out and need replacing. If they are cracked and dried out, these should be visable. To test the ball joints, use a prybar and insert it in or around the ball joint area and lift, pry or push to see if the ball joint is loose, it should have NO movement. Also bouncing could be a sign that the shock absorbers are worn and need replacing. If there are wet areas where the hydraulic fluid in the shock is leaking , it should, be replaced.

Needs new bushings and allignment