In a post about M6 shifter noise, you mention that there is a TSB for gurgle noise in the glove box area. I took my car to the dealer for this a few weeks ago thinking that I had a vacuum leak. They stated that it was just a bad design in the Camaro and the HVAC lines were running right next to the firewall there and were not sound insulated. Thus, they did nothing and told me to live with it. Do you know the TSB number for this?