Here is a handy little tool from Empire Engineering that all shops and shade tree mechanics need when battling the Duramax Crank shaft damper sheering off the factory Pin. This tool kit allows you to re-key the crank shaft without removing the crank or motor from the truck. The kit allows one to perform the task multiple times on several different crank shafts by simply purchasing more dowels. (563-588-2708/www.empiredieselperformance.com)