It's on the throttle body, opposite side of the throttle cable.
After the catalytic converter.
It might be in the diagram of parts and places, if comes with it.
Need to know which engine the 02 S10 has.
The 02 Chevy S10 with a 4 cylinder or a 6 cylinder does not have a timing belt.
try lmctruck.com all S10 2 wheel drives are the same from 82 to 02
Three altogether. Two upstream and one down stream.
Don't know what year you have but on a 02 S10 4.3L engine it is located on the drivers side of the engine between spark plugs #3 & #5.
The engine holds 4 and one half qts. of motor oil with filter change.
Could be a plugged fuel filter or a plugged catalytic converter.
In a 2002 Chevy S10, the radio fuse is located in the fuse box, which is typically found under the dashboard on the driver's side. To access it, you may need to remove the cover of the fuse box. Look for the fuse labeled "RADIO" or "AUDIO" in the diagram on the cover or in the owner's manual to identify the correct fuse. If the radio is not functioning, check this fuse to see if it needs to be replaced.
The #4 cylinder on a 4.3 L engine would be the middle one on the passenger side.
I had the same problem with my 02. had to replace the EGR Valve.