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noise problem

Ask the People Who Own One:

2005 - 2007 Cadillac STS

what is the cause for a high-pitched alarm sound that through the stereo speakers

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Response from AcuraT

5:12 pm February 11, 2020

There are a couple of causes reported online for this. One is that the OnStar unit is malfunctioning and it needs to be fixed. The other is a random beep tone that lasts from a few seconds to serveral minutes, espeically when starting the car. It has been traced to the Bose amplifer (driver side trunk) where a new one from the dealer costs $700, but you maybe able to find it cheaper on eBay or something like that.

I picked this up from a BING search, so take it for what is worth. This is from different reports online. Best of luck.



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