Had this horrible droning sound from my exhaust, had it since day 1. I did not have $900 lying around for the Borla exhaust so I took the exhaust down (3 bolts), and cut that stupid heat shield off and now i have silence when i drive. Pretty easy to do.

You can refer to GM bulliten#03-06-05-00bd

Had a customer over this week that had the same thing, took his off too. :)