had the same problem...
step 1- pull all oil pan bolts
step 2- unbolt 4 motor mouts
step 3- jack engine up from front of tranny
step 4- drop oil pan down far enough to get your hand and a 12mm wrench (preferably gear wrench but regular box wrench works) take out the 4 bolts holding the oil sump (oil pickup) 2 at the front pass side 1 half way down the block on the pass side and the last bolt is in the 3rd (center of the 5) main crank bearing caps. USE A FLASH LIGHT TO SEE IT AND ATTACK IT FROM THE FRONT OR THE DRIVERS SIDE FROM UNDER THE TRUCK. <img src="/forums/images/graemlins/notooth.gif" alt="" />
step 5- pull oil pan out

step6- check for timing chain guide debris <img src="/forums/images/graemlins/scared.gif" alt="" />

you can kinda see the bracket that bolts to the bearing cap in this pic..
http://personal.utulsa.edu/~nathan-buchanan/93fsm/engine/54descript.pdf

hope this helps <img src="/forums/images/graemlins/wink.gif" alt="" />
KEVIN