PAC RP5GM51 Radio Replacement Interface with SWC/OnStar Outputs for Select 2014 Chevrolet and GMC Trucks Retains OnStar Telematics system / Retains front and rear park assist Data controlled outputs for connection to your navigation radio; speed, reverse and E-brake status output wires Retains original steering wheel control functions with the new radio with no additional interface or programming needed Data controlled RAP accessory output Works right out of the box with most radio brands Retains OnStar telematics system / retains front and rear park assist Data controlled outputs for connection to your navigation radio; speed, reverse and e-brake status output wires Retains original steering wheel control functions with the new radio with no additional interface or programming needed Data controlled rap accessory output Interface can be quickly updated if needed from the PAC website using a PAC-UP USB adapter