Ball-joint needs replaced most likely.
Could be a bad tire, loose lug nuts, wheel bearing going bad and if the truck is a 4 wheel drive it could be the front axle CV joint going bad.
center of front wheel to center of rear wheel.
Measure from the Center of the front wheel to the centrer of the rear wheel
It is rear wheel drive only.
It is in the front differential housing. Craw under the front of the truck and look at the housing towards the passenger side and you will see it. It will have electric wires going to it.
the truck has hubs. 4x4 front wheel bearings are not serviceable.
Brakes, wheel bearing.
No, 4x2 usually means 4 door 2 wheel drive truck. Front wheel drive sierras don't exist. Except for the SUV's
If the truck is in 4 wheel drive mode, yes.
yes you can just strap it to the frame in front of the truck
Unbalanced front wheel.
2 wheel drive or 4 wheel drive? It makes a difference.