Axxess AXSUB-GM6 Add-A-Sub Interface for Buick, Chevrolet and GMC IOR 2021-2024

Axxess AXSUB-GM6 is a vehicle-specific Add-A-Sub data interface designed to add aftermarket subwoofer signal to compatible factory-radio systems while keeping the factory radio in place. The interface provides a processed subwoofer signal, remote turn-on output, and included bass control for a cleaner factory-radio amplifier integration.

Key Features

• 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 and vehicle-specific harness included
• Installation done at the radio location
• Micro-B USB updatable

Vehicle Fitment / Application

select Buick, Chevrolet and GMC 2021-2024 vehicles with IOR non-amplified systems

Applications listed by Axxess include Buick Envision 2022-2023; Chevrolet Silverado 2022-2024, Suburban 2021-2024 and Tahoe 2021-2024; GMC Sierra 2500/3500 2024 and Yukon 2021-2024 with IOR / non-amplified notes where listed.

Important: AXSUB interfaces are application-dependent. Always verify final fitment by year, make, model, trim, factory radio code, factory amplifier status, audio package, and current Metra / Axxess fit guide before purchase or installation.

Installation Notes

• Installs at the radio location using the included 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-GM6 Add-A-Sub interface
• Vehicle T-harness
• Bass knob

Technical Specifications

• Brand: Axxess
• Model: AXSUB-GM6
• Product Type: Vehicle-specific Add-A-Sub data interface
• Application: select Buick, Chevrolet and GMC 2021-2024 vehicles with IOR non-amplified systems
• 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-GM6
• UPC: 086429435302
• Sold As: Each
• Included Components: Axxess AXSUB-GM6 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