Axxess AXRC-GM4 radio data interface wire harness General Motors 2000-2005. When replacing the OEM radio in select vehicles some features will be lost or not function. This radio data interface will retain those features and provide Nav outputs for multi media radios. This interface is designed for non-amplified models, or when bypassing a factory amplifier. Used in models without OnStar. Retains all vehicle chimes.
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