When replacing the OEM radio with an aftermarket radio some features may be lost. This interface will retain those features and also provide Navigation outputs when adding an aftermarket Navigation radio. Will retain chimes and Onstar. Works in amplified models . this interface works in General Motors 2005-2011.) Retains OnStar / OE Bluetooth . Adjustable OnStar level . Retains balance and fade . USB-CAB (sold separately) Updatable.
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