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Hello All,

When I turn the ignition to 'on', I hear a loud beeping sound that I can't identify. This beeping noise just started within the last few days and it's driving me mad. I also hear a shorter beeping sound when I turn the car off. It's just one beep lasting around 1 second. I've read in other posts about problems with 02-05 cars with Onstar being the culprit, but I'm not sure if this is causing the problem. Does anybody know what I can do to locate the problem? I wish I could describe this better...sorry about the lack of info.

Thx
 
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