Axxess AXSUB-GM5 Add-A-Sub Interface for select Buick, Chevrolet and GMC 2019-up vehicles

Axxess AXSUB-GM5 is a vehicle-specific Add-A-Sub data interface designed to add aftermarket subwoofer signal to compatible factory-radio systems. The patented AXSUB interface processes low-frequency signal that may be limited by the factory radio, helping an added subwoofer amplifier perform properly while the factory source unit remains in place.

At a Glance

• Plug-and-play Add-A-Sub data interface for adding an aftermarket subwoofer while retaining the factory radio
• Designed for non-amplified systems
• 2-channel non-fading 5V RMS output
• Fixed low-pass frequency of 234Hz
• 250mA remote turn-on output
• Bass knob included for subwoofer level control
• Vehicle-specific harness included
• Installation done at the radio location
• Micro-B USB updatable

Exact Vehicle Compatibility

Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.

Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.

Installation Notes

• Installs at the radio location using the vehicle-specific harness
• Designed to provide subwoofer amplifier signal and remote turn-on output without replacing the factory radio
• Bass knob provides convenient subwoofer level control
• Professional installation is recommended for amplifier integration, gain setup, and subwoofer tuning
• Check the latest Metra / Axxess instructions before installation

What’s in the Box

• Axxess AXSUB-GM5 Add-A-Sub interface
• Vehicle T-harness
• Bass knob

Technical Specifications

• Brand: Axxess
• Model: AXSUB-GM5
• Product Type: Vehicle-specific Add-A-Sub data interface
• Application: select Buick, Chevrolet and GMC 2019-up vehicles
• Vehicle System: non-amplified systems
• Audio Output: 2-channel non-fading 5V RMS output
• Low-Pass Frequency: Fixed 234Hz
• Remote Output: 250mA remote turn-on output
• Update Port: Micro-B USB
• Sold As: Each

Identifiers & Packaging

• MPN: AXSUB-GM5
• UPC: 086429435296
• Sold As: Each
• Included Components: Axxess AXSUB-GM5 Add-A-Sub interface, Vehicle T-harness, Bass knob

Why Buy From MCOR Automotive

• Authorized retailer for the brands we sell
• Specialists in vehicle audio integration, radio replacement parts, and installation accessories
• 22+ years of professional automotive electronics experience
• Expert support for compatibility verification and proper setup