Most likely cause is out of balance wheels. Get your wheels balanced by your garage or tyre specialist.
bad front brakes.
From my experience with this problem it isn't the steering wheel that is shaking but your U joints could be bad or something else under the car. Get it to a mechanic. Can't give a cost for this.
Engine miss.
try balancing the front wheels
how do you fix play in a 1997 mercury mountainer steering wheel
Tires out of balance, bent wheel, or worn suspension parts.
Could be a wheel weight missing, a bad ball joint or a bad shock.
a steering wheel srevice means that if you have power sterring in your car they fix it. they also fix ur aliignment
It's possible, but there are other causes too. Alignment, shocks and front wheel bearings can all cause this.
steering wheel diagram for 1993 silverado horn
take it to the dealer........
First, take the car for a wheel alignment. Then remove the horn pad, unbolt the steering wheel, turn the wheel around and bolt it back on.