Choose Your PAC RadioPRO Advanced Interface
Six original RadioPRO Advanced interface models, one listing. These modules are for installing an aftermarket radio while retaining application-specific vehicle functions. They are NOT AmpPRO 4 amplifier-integration modules. Choose the exact vehicle wiring/retention architecture using the Vehicle and factory features model selector.
Verify model year, factory radio, amplifier, OnStar, chime, steering-wheel controls, camera/rear entertainment and any separately required harnesses. Features vary by exact model; a GM or Jeep badge alone is not sufficient to choose a module. Some functions require vehicle-specific firmware and accessory wiring. SMS Car Audio can confirm the correct interface before installation.
Chrysler, Dodge, Jeep and RAM — 1 option
CH1A-RSX — Chrysler, Dodge, Jeep & RAM Radio Replacement — CH1A-RSX
Original configured retail price: $349.00
CH1A-RSX is for supported Chrysler, Dodge, Jeep and RAM vehicles where replacing the factory radio means more than matching power and speaker wires. The vehicle uses CAN data for factory controls and retained features, so the radio replacement needs an interface that keeps the supported vehicle functions talking after the OEM radio comes out.
CH1A-RSX is a radio installation adapter for select Chrysler/Dodge/Jeep/RAM CAN-bus vehicles. It supports factory steering-wheel controls and supported factory amplified systems. Exact retained features and companion parts vary by vehicle.
Where It Fits
Use CH1A-RSX only when the exact vehicle, factory radio and audio architecture support this interface. Vehicle generation, premium amplifier, camera/RSE equipment and Uconnect architecture can change the required path.
Manufacturer Specifications
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Manufacturer: PAC
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Model: CH1A-RSX
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Product family: RadioPRO Advanced
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Type: CAN-bus radio replacement interface
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Application: Select Chrysler, Dodge, Jeep and RAM vehicles
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Supported functions: Application-dependent steering-wheel-control and factory-amplifier retention
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Firmware: Field-updateable where supported by PAC
Important: application-specific limitations can include some premium-amplified systems without aftermarket-radio fader control and some vehicles requiring additional camera/RSE retention hardware. Exact vehicle configuration must match before ordering.
General Motors — different chime, amp, OnStar and steering-wheel-control support — 5 options
GM1A-R — GM Chime & Amplifier Retention — GM1A-R
Original configured retail price: $249.00
GM1A-R is for supported GM radio-replacement jobs where the factory chimes and amplifier need to stay in the system, but steering-wheel-control retention is handled through an optional compatible interface rather than built into this model.
That makes GM1A-R a different architecture from GM1A-RS and GM1A-RST. Do not choose between them by price alone; the vehicle’s retained-feature requirements decide the correct part.
Where It Fits
Use GM1A-R only when the exact vehicle, factory radio and audio architecture support this interface. Bose/non-Bose configuration, OnStar requirements, steering-wheel-control strategy and data-bus generation can change the required path.
Manufacturer Specifications
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Manufacturer: PAC
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Model: GM1A-R
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Product family: RadioPRO Advanced
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Type: GM radio replacement interface
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Retained functions: Chimes and supported factory amplifier
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Steering-wheel controls: Connection provided for an optional compatible SWC retention interface
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Vehicle coverage: Select General Motors applications; exact OEM radio/audio/network configuration must be compatible
Important: this is not interchangeable with GM1A-RS/RST or later GM interfaces. Exact OEM radio/audio/network configuration is required before quoting.
GM1A-RS — GM Chime, Amplifier & Steering-Wheel Control Retention — GM1A-RS
Original configured retail price: $349.00
GM1A-RS is for supported General Motors radio replacements where the factory radio is tied into vehicle chimes, steering-wheel controls and a factory amplifier. Instead of bypassing those systems blindly, this interface keeps the supported factory functions in the new-radio installation path.
GM1A-RS retains chimes, the supported factory amplifier and steering-wheel controls. Exact application, factory-radio architecture and required companion adapters still depend on the vehicle.
Where It Fits
Use GM1A-RS only when the exact vehicle, factory radio and audio architecture support this interface. It is not interchangeable with GM1A-RST, GM3A-RSTX or GM6A-RST: OnStar, GM LAN generation, connector architecture, Bose equipment and other retained features change the correct interface.
Manufacturer Specifications
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Manufacturer: PAC
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Model: GM1A-RS
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Product family: RadioPRO Advanced
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Type: GM radio replacement interface
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Retained functions: Chimes, supported factory amplifier and steering-wheel controls
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Vehicle coverage: Select General Motors applications; exact OEM radio/audio/network configuration must be compatible
Important: do not choose this part from GM make/year alone. Factory radio, Bose/non-Bose system, OnStar requirement and data-bus generation determine the correct path.
GM1A-RST — GM Amplifier, Steering-Wheel Control & OnStar Retention — GM1A-RST
Original configured retail price: $399.00
GM1A-RST is the GM radio-replacement path for supported vehicles where chimes, steering-wheel controls, the factory amplifier and OnStar all need to stay in the system after the factory radio is removed.
That OnStar retention is the important distinction from GM1A-RS. The two should not be treated as price-step variants; the vehicle’s factory equipment decides which architecture belongs in the quote.
Where It Fits
Use GM1A-RST only when the exact vehicle, factory radio and audio architecture support this interface. Bose/non-Bose audio, OnStar, connector/data-bus generation and required antenna/camera/USB adapters can change the required path.
Manufacturer Specifications
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Manufacturer: PAC
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Model: GM1A-RST
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Product family: RadioPRO Advanced
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Type: GM radio replacement interface
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Retained functions: Chimes, supported factory amplifier, steering-wheel controls and OnStar
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Vehicle coverage: Select General Motors applications; exact OEM radio/audio/network configuration must be compatible
Important: this is not interchangeable with GM1A-RS, GM3A-RSTX or GM6A-RST. Exact OEM radio/audio/network configuration determines the correct interface.
GM3A-RSTX — GM LAN 29-Bit & OnStar Radio Replacement — GM3A-RSTX
Original configured retail price: $399.00
GM3A-RSTX is for supported General Motors radio-replacement applications using the GM LAN 29-bit data bus and the specific 14-pin/16-pin harness architecture PAC designed this interface around.
This is not a generic GM interface. The network generation and connector set are part of the fitment decision, along with OnStar, factory amplification and the original radio configuration.
Where It Fits
Use GM3A-RSTX only when the exact vehicle, factory radio and network architecture support this interface. Do not substitute GM1A-RS/RST or GM6A-RST simply because the vehicle is GM or has OnStar.
Manufacturer Specifications
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Manufacturer: PAC
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Model: GM3A-RSTX
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Product family: RadioPRO Advanced
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Type: GM radio replacement interface
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Network: GM LAN 29-bit
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Harness architecture: 14-pin and 16-pin vehicle harnesses
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OnStar: Supported on listed applications
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Vehicle coverage: Select General Motors applications; exact OEM radio/audio/network configuration must be compatible
Important: the exact vehicle, factory radio/audio package, OnStar requirement and network/connector architecture must match this interface.
GM6A-RST — GM Bose, OnStar & Steering-Wheel Control Retention — GM6A-RST
Original configured retail price: $439.00
GM6A-RST is for supported GM radio replacements where the vehicle’s OnStar system, Bose factory amplifier, steering-wheel controls and navigation outputs all need to remain part of the installation.
This is a different integration path from the simpler GM1A and GM3A interfaces. The Bose amplifier and OnStar retention are part of the architecture, not optional add-ons that can be assumed from year alone.
Where It Fits
Use GM6A-RST only when the exact vehicle, OEM radio, Bose system, OnStar and connector/data-bus architecture support this interface.
Manufacturer Specifications
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Manufacturer: PAC
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Model: GM6A-RST
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Product family: RadioPRO Advanced
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Type: GM radio replacement interface
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Retained functions: OnStar, Bose factory amplifier and pre-programmed steering-wheel controls on supported applications
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Outputs: Navigation outputs on supported applications
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Vehicle coverage: Select General Motors applications; exact OEM radio/audio/network configuration must be compatible
Important: Bose/non-Bose, OnStar and OEM radio/network differences determine the correct interface. Do not use GM6A-RST as a generic GM solution.
