C6 Corvette Radio Replacement Interface Harness (Replaces PAC C2R-GM24)
PAC RP3-GM11 RadioPRO3 Interface
The PAC RP3-GM11 RadioPRO3 Interface provides a modern, reliable solution for installing an aftermarket radio in 2005–2013 C6 Corvette models without OnStar. This interface replaces the now-discontinued PAC C2R-GM24, while providing the same essential integration features along with additional capabilities for modern head units.
Designed for GM Class-II data bus vehicles, the RP3-GM11 allows an aftermarket stereo to communicate properly with the Corvette’s electrical system while retaining important factory functions.
Key Features
• Replaces the discontinued PAC C2R-GM24 interface
• Allows installation of most aftermarket single-DIN and double-DIN radios
• Retains factory warning chimes
• Maintains Retained Accessory Power (RAP) so the radio stays on until the door is opened
• Retains factory Bose amplifier when equipped
• Compatible with Bose and non-Bose audio systems
• Provides amplifier turn-on output for the factory sound system
• Retains steering wheel audio controls when equipped
• Provides outputs for vehicle speed signal (VSS), reverse, and parking brake for navigation radios
Vehicle Compatibility
2005–2013 Chevrolet Corvette (C6)
• Compatible with Bose and non-Bose systems
• Designed for vehicles without factory OnStar
Why This Interface Is Needed
Modern GM vehicles use a data-bus communication system that controls many vehicle functions through the factory radio. When the original radio is removed, those functions can be lost. The PAC RP3-GM11 interface restores these features, ensuring the aftermarket radio operates properly while maintaining key factory systems such as warning chimes and accessory power.
This interface is widely used by professional installers and provides a dependable replacement for older modules such as the PAC C2R-GM24, which are no longer in production.
Notes
• Steering wheel controls are retained if the vehicle is equipped with them.
• Not compatible with vehicles equipped with OnStar.
• Professional installation is recommended.
Professional installation is recommended for best results.
