I know in '88 they were behind the glove box (open the glove box and take out the four screws holding the inside of the glove box in place, then pull it free) - I don't think it changed between '88 and '93, but I'm not sure.
It sure will.
Most likely R-12
Factory rating is 200 horsepower.
0 TDC / Top dead center.
no
Behind the passenger side kick panel.
There is not 1 on that year. They were NOT used untill 1996
off the driver side exhuast manifold
In the fan box behind the glove box.
Yes it will
The auxiliary fan control relay on a 1993 Chevy 1500 pickup with a 5.7 liter V8 engine is typically located in the underhood fuse/relay box. It may be identified by its label or diagram in the fuse/relay box cover. If in doubt, consult the vehicle's manual for specific location details.
Yes you can it is all the same, No problem