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Axxess Subwoofer Interface w/ Bass Knob & Vehicle T-Harness For GM 13-20

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Original price $221.99
Original price $221.99 - Original price $221.99
Original price $221.99
Current price $176.99
$176.99 - $176.99
Current price $176.99

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  • Enhanced Audio Output: Experience powerful bass with 2 channel non-fading 5V RMS output, suitable for both amplified and non-amplified vehicles.
  • Precision Bass Control: Includes a bass knob for easy adjustment of bass levels, providing a tailored listening experience.
  • Seamless Installation: Designed for GM models from 2013 to 2020, this interface offers a vehicle-specific T-harness for effortless installation at the radio location.
  • Versatile Compatibility: Compatible with various GM models including Buick, Cadillac, Chevrolet, and GMC, ensuring seamless integration with your car audio system.
  • Easy Updates: Stay current with micro USB updateable functionality, ensuring compatibility with future vehicle models and software enhancements.

Axxess Subwoofer Interface w/ Bass Knob & Vehicle T-Harness For GM 13-20

This Listing Includes:

  • (1) AXSUB Interface

  • (1) AXDSPX-GM1 Vehicle T Harness

  • (1) Bass Knob

Elevate your car audio experience with the Axxess Subwoofer Interface. Boasting a 2 channel non-fading 5V RMS output and a fixed low pass frequency of 234Hz, this interface delivers deep, rich bass for an immersive listening experience. The included bass knob allows for precise control over bass levels, while the vehicle-specific T-harness ensures a seamless installation process. Compatible with a wide range of GM models from 2013 to 2020, this interface is designed to enhance your car audio system with ease.


  • 2 Channel non-fading 5V RMS output

  • Fixed low pass frequency of 234Hz

  • 250mA remote turn-on output

  • Designed for both amplified and non-amplified vehicles

  • Bass knob & vehicle-specific harness included

  • Install done at radio location

  • Micro USB updateable

Technical Specifications:

  • Output Channels: 2

  • Output Voltage: 5V RMS

  • Low Pass Frequency: 234Hz

  • Remote Turn-On Output: 250mA

Vehicle Applications:


  • Enclave 2018-2019 RPO IO5 IO6

  • Enclave 2018-2019 RPO IO5 IO6 & Bose


  • ATS 2013 -2019

  • Escalade 2015-2020 Bose

  • SRX 2013-2016 Bose


  • Camaro 2016-2018 RPO IO5 or IO6

  • Colorado 2015-2019 RPO IO5 IO6

  • Corvette 2014-2019

  • Cruze 2016-2018 RPO IO5 or IO6

  • Equinox 2018-2018 RPO IO5 or IO6

  • Impala 2014-2018

  • Malibu 2016-2018 RPO IP1

  • Malibu 2016-2018 RPO IO5 or IO6 & Bose

  • Silverado (LD) 2019 -2019 RPOIO5 or IO6

  • Silverado 2014-2018 RPO IO3, IO5 or IO6

  • Silverado 2014-2018 Bose

  • Suburban 2015-2020

  • Suburban 2015-2020 Bose

  • Suburban 2015-2020

  • Tahoe 2015-2020

  • Tahoe 2015-2020 Bose


  • Acadia 2019-2019 RPO IO5/IO6 & Bose

  • Acadia 2017-2018 RPO UQA

  • Canyon 2015-2018 Bose

  • Canyon 2015-2018 RPO IO5 or IO6

  • Sierra Limited 2019 -2019 RPO IO5 or IO6

  • Sierra 2014-2018 RPO IO3, IO5 or IO6

  • Terrain 2018-2018 RPO IO5 or IO6

  • Yukon 2015-2020

  • Yukon 2015-2020 Bose

Payment Information


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With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

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payment please confirm your address has been verified with PayPal. Once
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made using an unverified PayPal address will be refunded and order will
be canceled.

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has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

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If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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