Tire out of balance, bent wheel, belt broken in tire, loose or worn steering components, loose wheel bearing, loose lug nuts, or suspension parts worn.
if it shakes while your braking your front roters could be warped or if it shakes while your driving try balancing the tires at a tire shop.
under the steering wheel
there is not one
turn wheel and key in the ignition at same time.
This happens sometimes when there are teeth missing on the fly wheel
Only in the steering wheel I presume.
You need a special tool to remove steering wheels. It is a steering wheel puller. You can purchase one at your local auto parts store.
Take horn apart, remove center nut & use a steering wheel puller (carefully, when they break loose, it can be fun)
you will need a special tool called a steering wheel puller. they are needed to compress the rings around the column and wheel and release it so you can remove the main nut.
Try going to "autoaccessories4less.com.
How do I get a diagram of how to rebuild the steering column on a 1990 dodge ram 4x4, tilt wheel
screwdriver, be careful not to snap it