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Read this thread from the beginning again.
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Check your build tag in the glove box, if you don't see code U2K which is the XM radio option, you will have to install the XM module/wiring harness pigtail/antenna in order to receive the XM signal.
If you're HHR is an ex-rental/fleet vehicle, you will probably see code U2J which is the XM radio delete option commonly found on fleet vehicles. |
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