I just got home and re read your post daveseif, and I missed the part where you said it was an 06. (stupid, sorry!)
If i were you, since chevyguy8893 verified that the 06 does use a self retaining fastener joint and doesn't need the thread locking compound, just torque it to 85 lb ft. If you damage the bolt, make sure you go to the dealer and get the same bolt, since it is self retaining and has different threads.
If you're doing an 09 and you searched the forum and came to this thread, for an 09 the torque is 96 lbs ft. The 09 also uses a self retaining fastener joint that doesn't need any thread locking compound.
It does also add, Do not attempt to clean the threads with a standard tap. If a standard tap is used, damage to the joint threads will occur.