Axxess AXSUB-GM3 Add-A-Sub Data Interface for Select GM Vehicles
Enhance your factory audio system with deeper, more powerful bass using the Axxess AXSUB-GM3 Add-A-Sub Data Interface. Designed for select 2014-2018 GM vehicles with non-amplified factory audio systems, this vehicle-specific interface provides a simple plug-and-play solution for adding an aftermarket subwoofer and amplifier while retaining the factory radio and its original functionality.
The AXSUB-GM3 utilizes Axxess Add-A-Sub™ technology to deliver a clean, dedicated bass signal from the factory radio. It features a 2-channel non-fading 5V RMS output with a fixed 234Hz low-pass crossover, providing the ideal low-frequency signal for an aftermarket subwoofer amplifier without affecting the performance of the factory speakers.
Installation is quick and straightforward thanks to the included vehicle-specific T-harness, which allows the interface to connect at the radio location without cutting or modifying factory wiring. A dash-mountable bass control knob is included, giving drivers convenient control over subwoofer output levels while driving.
The AXSUB-GM3 also features a 250mA remote turn-on output for activating an aftermarket amplifier and includes Micro-B USB update capability to support future firmware updates and expanded compatibility.
Before purchasing, vehicle compatibility should always be verified. The AXSUB-GM3 is designed for select 2014-2018 Chevrolet, GMC, Buick, and Cadillac vehicles equipped with compatible non-amplified factory audio systems.
Whether you're adding a powered subwoofer, upgrading your factory sound system, or building a custom audio installation, the Axxess AXSUB-GM3 provides a clean, reliable, and professional solution for integrating aftermarket bass while retaining your factory radio.
Key Features
- Vehicle-specific GM Add-A-Sub™ interface
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Designed for select 2014-2018 GM vehicles
- Designed for non-amplified factory audio systems
- Adds an aftermarket subwoofer while retaining the factory radio
- 2-channel non-fading 5V RMS output
- Fixed 234Hz low-pass crossover
- 250mA remote turn-on output
- Includes dash-mountable bass level control knob
- Vehicle-specific plug-and-play T-harness included
- Installation performed at the radio location
- Micro-B USB update capability
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Compatible with select Chevrolet, GMC, Buick, and Cadillac vehicles
- Maintains factory radio operation while adding aftermarket bass
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Includes:
- AXSUB-GM3 interface
- Vehicle-specific T-harness
- Bass control knob
- Ideal for factory audio system bass upgrades
