Pac RP4-GM11 (R) RP4-GM11 All-in-One Radio Replacement & Steering Wheel Control Interface (for Select GM(R) Vehicles)

? All-in-one radio replacement & steering wheel control interface;? Preloaded with amp-retention & navigation-based output signals;? Retains all important OEM safety & convenience features;? Data-controlled RAP accessory output;? Data-controlled outputs for connection to navigation radio & speed, reverse & E-brake status output wires;? Keeps vehicle databus intact for service & emissions testing;? Retains factory-installed amplified audio system;? Interface can be quickly updated if needed from the PAC(R) website using PAC-UP USB adapter;? For select GM(R) vehicles;