PAC RP4-GM11 Radiopro4 Stereo Replacement Interface with Steering Wheel Controls for Select GM Vehicles

Upgrade your GM vehicle’s audio system with confidence using the PAC RP4‑GM11 Radio Replacement Interface. This all‑in‑one solution enables the installation of an aftermarket head unit in select 2000–2013 GM vehicles with Class II data bus, while preserving many critical factory features.

The RP4‑GM11 keeps your factory steering wheel controls, standard or premium amplifier, and rear seat entertainment system (most models) working exactly as before — even after removing the original radio. With data‑controlled outputs for RAP, VSS, illumination, reverse trigger, and parking brake, modern navigation and multimedia systems integrate smoothly with your factory wiring harness.