3m RP3GM11 Pac Radio Pro3 Rentention Module

PAC RP3-GM11 Radio Replacement Interface for Select GM Vehicles (Class II Data-Bus):High-current 10A accessory outputData-Controlled outputs for connection to navigation radio ? speed, reverse and e-brake status output wiresRetains factory-installed amp (if equipped)Data-Controlled RAP accessory outputKeeps vehicle data-bus intact for servicePlug-in connection for steering wheel control module (SWI-RC or SWI-X)Adjustable chime volume: 4 levels and offInterface can be quickly updated if needed from PAC website using PAC-Up USB adapterIncludes RadioPro3 module, plug and play vehicle connection harness and instruction manualFor GM vehicles with class II data-bus and 24-pin harness