I am not sure where it is but check the fuse box label in the cab...might be located there. But instead of going on a chase to find the fuse, just pull the positive side of the battery and replace the sensor. So you'll have to reprogram your radio stations...big deal...it's good practice anyway.
I'm looking to pull the fuse until I can fix the issue with the ABS. I replaced the sensors and still have the slip issue and sometimes brakes lock up. I want to see if pulling the fuse makes a difference as well.