The PAC RP3-GM11 Radio Replacement Interface for Select GM Vehicles without OnStar is for GM vehicles with Class II databus and 24-pin harness. It has a high-current 10 amp accessory output as well as data-controlled outputs for connect to your navigation radio—speed, reverse and E-brake status output wires. It retains the factory-installed amplifier, if so equipped. The RP3-GM11 has a data-controlled RAP accessory output, a plug-in connection for steering wheel control SWI-RC or SWI-X and keeps vehicle data-bus intact for service. The chime volume is adjustable with four levels and off. The interface can be quickly updated if needed from the PAC website using PAC-UP USB adapter.

High-current 10A accessory output
Data-controlled outputs for connection to navigation radio—speed, reverse & E-brake status output wires
Retains factory-installed amp (if equipped)
Data-controlled RAP accessory output
Keeps vehicle databus intact for service
Plug-in connection for steering wheel control module (SWI-RC or SWI-X)
Adjustable chime volume: 4 levels & off
Interface can be quickly updated if needed from PAC® website using PAC-UP USB adapter
Includes RadioPro3 module, plug & play vehicle connection harness & instruction manual
For GM® vehicles with Class II databus & 24-pin harness