Was wondering how you change wheel bearing
This is not a job for the shade tree mechanic. There are seals that need replacing and bearing preload has to be set very accurately with a pull scale. I would get some help on this one.
Look and see if they sell the entire hub assembly for your truck. You didn't specify which end the sound's coming from. If they do, just replace the entire assembly and call it a day. As @Doc mentioned, modern cars aren't like the old days where you'd unlock a huge axle nut, slide a rotor off, pack new bearings and stick them back in the rotor/hub with a new backing plate. Their tolerances have progressed well past that point and need to be set by a pro.
Even the old ones had specific preload settings. Thanks.
That's news to me! I replaced the wheel bearings in my Catalina's front axle when I did the rotor job this year, and nobody told me this, lol. All I did was torque the axle nut down to spec and backed it off until the codder pin just engaged with the castle nut. I've not had any issues with them. I was told afterwards that torquing the axle nut is what presses the bearings in place.