Need a little help with my K10

[geezer#99]

Could be idler arm.
Or loose wheel bearings.
Or worst case a cracked frame near the steering box.
Or low air pressure on tires.

Jack up the passenger front tire and grip the two sides of the tire and move it in/out. Watch for movement of tie rods and idler arm. Shouldn’t be much.
Grip the tire top and bottom and move it in/out.
Shouldn’t be much movement. If lots of movement then suspect wheel bearings or wrong torque on them.

You can do that on both sides.
Another remote possibility is a bent rim on front or back.