Let me clarify my above post...
All of that was replaced while still under the factory warranty.
I was just point out examples of WEAR AND TEAR that the FACTORY WARRANTY covered.
No matter WHAT your GMPP rep told you.
EDIT:..my dealer is Frank Kent Cadillac in Fort Worth TX.
Just in case you wanted to compare online prices to their price.
They have always dealt fairly with me...for the last 20 years.
Texas Jim