Thanks for replying CatchMeIfYouCan631 ... Looking for assistance with installing and bypassing. I've done (1) non-stock radio install, but don't trust my skills enough to open up my Trailblazer's dash . Then installing a new AVIC-D3 and having a non-professional appearance. Then attempting to do the by-pass . So debating if I have Best Buy install ... then my understanding is I would have to pull dash panels [again] to do the bypass. I do I.T. for a living os have some technical skills ... its more of the mechanical part of taking dash apart - getting the D3 installed correctly - etc.
