OP: This should be covered under the CPO warranty. I have had the trunk seal replaced (twice!) and the wire harness / loom re-taped and slightly resituated so that it doesn't rub against the seal. This was covered under my original BTB warranty but the CPO should cover this as well. This seal is probably classified as a "wear" item but not when the loom causes damage. This is a known problem. I'll suggest you try another dealer or call Chevy / GM if you aren't getting anywhere with this issue.
Here's the link to the thread:
http://www.camaro5.com/forums/showth...=trunk+harness