Yes.
Remember that removal of this bolt is counter clockwise and requires a special tool. Try searching the internet for Gm-Chevrolet fan clutch removal tool.
I suggest dropping in at your local parts store and viewing the part prior to purchase to get a general idea of what the unit looks like and how it might be removed and installed.
YesYes
Clock wise to tighten.
Replace the fan clutch that is on the front of the engine.
You have several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
There is more than one O2 sensor and they are all threaded into the exhaust system at various points.
I gave up on trying to get my fan clutch off of my 01 S-10. I took it to a garage who informed me that you need an impact wrench to do it.
counter clock, if you are buying a new water pump check the tread in it
No.
No.
The 97 S10 2.2L engine doesn't have a timing belt.
Yes
Use a strap wrench or similar device to keep it from turning.