The product is an OEM OnStar Antenna Control Module Unit for a 2000-2005 Cadillac Deville. The module has a manufacturer part number of 12201539 and an OE/OEM part number of 25723912. It is designed specifically for Cadillac vehicles and ensures proper functionality of the OnStar system. This unit is a genuine part from the manufacturer, offering quality and compatibility with the Cadillac Deville model specified in the listing.
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