What is the purpose of that back there if it is COVERED. Really odd.
Do you still have the window sticker which shows what options your Trailblazer is equipped with? You could also look for the RPO (regular production option) code found on the production code list which I believe is under the cargo tray. I do know that the Bose system has a small "Bose" logo on the front door speakers, at least mine does anyway.How do I know if I have the Bose system? I do have the rear bass speaker but have not looked closely for the "pre production" sticker thingy.
Yes and the people who do have the sub without the Bose system also seem to have the "pre production sample" sticker on the housing. My RS with the Bose premium system doesn't have that sticker.It would be nice too see how many none Bose systems have that speaker