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Sound Quality/ On-Star Issue

1844 Views 6 Replies 5 Participants Last post by  randomsandwhich
OK a new one I need some help on. I have an intermittent issue with the mid-level sound/ On-Star/back up warning system. Sometimes when I start my truck the Onstar sound level is super low and it sounds as if my door speakers are not working at all, I have no mid range sound just the A-pillar tweeters. Other times it is fine. Also I noticed when I have the issue the back-up sensors have no sound either. Is all of this stuff tied in through the head-unit and through the door speakers? What should I go looking for? I was thinking a loose connection in the head unit speaker wire but I wasn't sure if these are the speakers that the On-Star and backup sensors use.
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All warning chimes, door chimes and onstar run through the regular car speakers. You have stock or aftermarket head unit?
It is stock and when it cuts out it sounds as if just the front door speakers are cutting out because I still get sound through the A pillar tweeters
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