Check the listing for details. PAC RP5-GM51 Interface GM 14-up 29-Bit GM LAN. Condition: New. Listed at 154.99 USD. What's in the boxRadio replacement/SWC interface module (for GM LAN 29-bit databus) Chime module (CMX) Vehicle harness (RP5-GM51-HAR) Radio harness SWC harness (4-pin connector to 3.5mm/blue wire) Antenna adapter Instructions About this itemWritten by Crutchfield's Bob BihlmayerPAC's RP5-GM51 wiring interface lets you replace the factory radio in select 2014-19 General Motors vehicles, and still retain your factory warning chimes and your steering wheel audio controls. The interface also works with the OnStar system and the front/rear park assist. If you're installing a navigation receiver, this interface provides retained accessory power (RAP), vehicle speed sensor (VSS), and other crucial connections. Warranty: 1 year. Please enter your vehicle information or call an Advisor at to find out if this interface is compatible with your vehicle.