Has anyone replaced the liner to the right side of the battery? Its a small piece that covers a hole facing the quoter panel. The one that was their has crumbled, it look like the original one and is made out of some fiber material. Is it vital to have this replaced and if so, what could replace it?

A lot of people rip ALL of that crap out of there. Makes it a whole lot easier to work in the engine compartment. Less itching.

Its sound deadener, and probly keeps some heat in. Its not needed. My biggest concern with it is it holding water and rusting out the metal under it.

Thanks for all your information. I just thought, if GM put it there, there must a be a reason.