Vehicle Fit Guide

Select your particular vehicle by using these series of options. We will then provide a list of all which fit your vehicle.

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Vehicle Fit Guide

Find Metra parts specifically for your car.


Stock No. ANC-GMH3

ANC Bypass Harness fits select GM vehicles 2016- 2020


This active noise canceling bypass harness ensures smooth speaker and subwoofer upgrades in non-amplified GM vehicles with ANC audio systems in a variety of RPOs. It maintains proper communication between audio equipment and the ANC system, giving listeners full control over their music without sound distortion, interference, or conflict between devices. Within ANC systems, built-in microphones detect and eliminate background noise in a vehicle but often mistake aftermarket speakers and subwoofer vibrations for interference, creating compatibility issues. Audio system upgrades can also affect a vehicle’s sensitive electronics, causing system errors. Axxess’s ANC bypass harnesses prevent these issues while giving installers more flexibility in their audio system design, as they will no longer have to avoid ANC microphones within the vehicle’s interior. All Axxess products come with full support from Axxess integration professionals, who are available to call for technical support seven days per week.


  • Active noise canceling bypass harness
  • Fits non-amplified GM vehicles with ANC audio systems, in a variety of RPOs
  • Enhances sound quality during audio system upgrades
  • Eliminates unwanted ANC interference for complete sound customization
  • Protects vehicle electronics
  • Quality connectors
  • Always check vehicle warranty before altering the audio system to prevent voiding coverage

Visit for more detailed information about the product and up-to-date vehicle specific applications.



  • CT6 2016-2020 w/Audiophile System – RPO Code UQH

Note: refer to installation manual for ANC module location

Visit for more detailed information about the product and up-to-date vehicle specific applications.

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