sablesurfer -
I have mentioned this stuff on this site before and it is the best thing I have found. I would recommend this stuff and it is available over the counter at any GM Dealership. It has worked when ALL of the others didn't. It is:
GM Gasket Sealing Compund 1#1050026 Gr.8.800.
It never hardens or dries out. Temperature range from -50F to 400F. I first used it on the rear end housing of my truck and have since used it on all other components of the truck. I think you will be happy with it!
Joe
