I am not at the shop and need to know before I go back out there. Smaller than 15mm for sure but I didn't have a way to measure so.............

Hehe I believe it is a 14mm IIRC.
Make sure you replace the bolts aswell since they are one time use only. You also have to tighten them down a specific way, you can't just torque them. :grd:

This is for a duramax right? Just looked at your sig.

I believe it is 14mm. Yes you must replace the bolts.You will need a flywheel holding fixture to do this. The torque is 58 ft# and then 60 degrees then additional 60 degrees.you will need a big breaker bar and hope you ate your wheaties.Just use a star pattern.

call phill(ratlover) he went through this. cell #309 370 5234

Thanks fellas. Yes it's for a LB7, don't focus on the sig to much:p: .
I already got new bolts just hoping for a little tech info. Thanks again.