I assume you are referring to the skid plate bolts which in turn holds up the transmission. The bolts thread into nutserts inside the frame. There is nothing to see. Alot of times the nuts break loose inside the frame. If yours are still good, just drill and use an ez-out to get the rest of the bolt out and replace it.
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.