Does four wheel drive have its own fuse in a 93 s10 blazer If your trans is stuck 4hi will removing this shift it back into 2wd?

No, the four-wheel drive system in a 1993 S10 Blazer doesn't typically have its own dedicated fuse. The various components (motors, switches, etc.) within the 4WD system will be protected by fuses in the main fuse box, but there isn't one single fuse solely for the entire 4WD system. If your 4WD system isn't working, you'll need to check the relevant fuses in the fuse box (consult your owner's manual for locations and ratings).

And no, removing a fuse will *not* shift a stuck 4HI transfer case back into 2WD. The transfer case's shift mechanism is mechanical, not electrical. If it's stuck in 4HI, the problem is mechanical within the transfer case itself (likely a linkage or internal component failure). You'll need to investigate the transfer case's shift linkage and potentially disassemble it for repair or replacement. Driving it while stuck in 4HI on dry pavement can cause significant damage.