blizzardplowman
Crowd Control
Here's an even simpler trick, find a nut of the size required to fit over the broken stud of the glow plug. Square up the stud as best as you can, grab the wire feed welder and weld the nut to the glow plug, between the heat of welding and the proper size 3/8 ratchet they come right out. We have used this on several truck and it works slick. Changed all 8 on our 01 in a hour and they all had snapped off. We reinstall ours with copper anti seize on the glow plug threads to make future changes easier.