It sounds like it could be a bad strut. Push down quickly and firmly on the front of the vehicle, if the car bounces more than once or twice you may need to replace your struts.
rear wheel drive or 4x4 capable
The front wheel stud on a 1992 Chevy Blazer S10 can be changed by jacking the vehicle up, removing the wheel, and unbolting the caliper. The rotor assembly can then be removed, and the wheel stud pressed or hammered out of its seat.
It is rear wheel drive, until you shift it into 4 wheel drive.
If your front driver side wheel is taking bumps very hard there could be some kind of damage. It could be a bust strut or rod and need to be replaced by a mechanic.
35mm
Never heard of a "front wheel modulator" on a S-10 Blazer. If you mean hub, it is the wheel bearing assembly. If you meant 4x4 shift solenoid then depends if it is shift on the fly or not. The ABS has a modulator, but not sure what you mean.
it shakes to the right or left
It might be the CV joints. Go to a front suspension specialist and have it checked out.
34 mm
36 mm
tAKE THE FRONT DRIVE SHAFT LOOSE AND SEE IF IT STILL DOES IT IF IT DOES ITS THE FRONT CARRIER ASSEMBLY IF IT DONT ITS THE TRANSFERCASE
Worn right front wheel bearing.