Steering wheel vibrates really bad ,,,then it stops for a while then it starts again,,bad vibrations,,plus wen i turn right theres bangin noises from right

Your left front tire may be out of balance

you have an issue with a front tire more than likely. or could be the front rotor. I would bet my last breath its' tire or break/rotor related. Maybe even a wheel bearing but it usually doesn't cause vibration in steering wheel.

if you feel the pulsation in brake pedal when stopping. its a warped brake rotor thats causing it. for bad cv joint symtoms--- Unusual noises when making turns. As you are driving on the road and you make a turn at the corner, if you start hearing unusual sounds coming from under the car then this is one of the symptoms of a bad CV joint. These noises will sound like something is clicking beneath the car every time you turn the steering wheel. Evidence of a damaged boot. Steering wheel feels heavier. The steering wheel will start to feel tighter and heavier and you can hardly make simple turns to the left or right. In severe cases you might even feel heavy vibrations like you are driving down a rocky road.

bad tire, gad wheel bearings , loose steering tie rod ball joints , wheel alignment
take it to a front end specialist for a full inspection

in all honesty havent a clue without a drive ,sorry

Thumping noises and vibrations can be something as simple as a tread separation(or a big bubble) on one of your tires.As for the one wheel turning---that's perfectly normal.If you grab the wheel that's turning (not really recommended) and stop it completely,the other wheel will spin.

if it were the rotors it only happens when braking take in have them turn rotors see what happens good luck

Me too i think it a cv joint problem a cv joint got 3 rond bearing when turning each rond ball goes in a chanel it spin in there sometime that chanel get damaged a little hole appear and in occasion the ball get stuck in that hole and that your bad vibration i gave you example

Jack up the front end and put stands under it and block rear wheels. Look at axle boots and see if they are cracked. Try turning wheel back and forth sharply and see if you can hear any clicking. Problem could be outer axle joints. If the boots are cracked or you hear a clicking noise you will have to replace the axle. The axle and boot come as a complete unit. Please let me know what you find out.

Check the U-joints and axle baerings. But its most likely because the truck is in four wheel drive.