Tonight I found this note in a scosche installation manual and can't say that I've heard of this before. Now for the questions.2002-06 CHEVROLET TrailBlazer LS/LTZ
2003-06 GMC Envoy SLT
How to Test for "Premium Bose" systems:
There are 2 types of Bose systems available in some models of vehicles listed above. Turn factory radio volume up and down rapidly. If the sound system reacts immediately then the system is a standard BOSE, not a Premium BOSE. If the sound system volume does not react immediately, but has a noticeable delay, the system is a Premium BOSE.
Is there any truth to this?
Is standard bose/ premium bose the same as saying lux/ non lux?
If so, which is which?
I recall a thread where the OP needed to know if he had lux or non lux but was missing the RPO sticker in the glove box. Maybe this could have helped.:undecided