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Welcome ! Please let us know if you need any help. For other T-harness options please visit T-harness.com. Thank you
Welcome ! Please let us know if you need any help. For other T-harness options please visit T-harness.com. Thank you

Our products are NOT sold at any AUDIO SHOPS or online retailers, however knock off copies are, be aware dont pay more for less. Stay authentic 👽... Instock product ship the following business day!

What is ANC?

What is ANC?

The symptoms will only happen when the vehicle is in drive or reverse.

  • Feedback when the sub is playing
  • Thumping of rapid off beat rattling from the sub
  • Humming

ANC is not used in vehicles that are designed for offroad use. Microphones can be found in the headliner.

GM ANC bypass harness vehicles w/ IOU,UZ6 RPO Code 2021-Up

SKU GMNB1
Original price $15.00 USD - Original price $15.00 USD
Original price
$15.00 USD
$15.00 USD - $15.00 USD
Current price $15.00 USD
  • An LLJ original creation 1st in the world
  • Factory original connector
  • Disconnects microphones and eliminated feedback from aftermarket subwoofers
  • Connects at Factory Amplifier
Availability:
in stock, ready to be shipped

IMPORTANT

PAC and Metra(Axxess) sell stolen copies of our ANC bypass harness. Some of the fitment & information they provide is incorrect and does not reflect on our products.

This GMC ANC bypass is for Vehicles with IOU,UZ6 RPO Code. The ANC module can be found under the center dash by the gas pedal.  

GM/GMC

  • 2020-2024 Trail Blazer - None bose with ANC

The Active Noise Cancellation, or ANC, in your vehicle is designed to pick up on low frequency road noise and cancels out any undesirable sounds, making your drive a quieter and smoother ride. The ANC in your vehicle can become a major headache when adding aftermarket equipment, such as subwoofers or speakers. The ANC microphones will send feedback from the aftermarket subs through the speakers, making an odd sound or random "pops" that come and go, distorting your music.

 

Designed and built in the U.S.A by LLJ Customs. Stolen by PAC Audio and METRA elec.

This ANC bypass is designed to disable the ANC in any Chevy, GMC vehicle with the ANC amplifier under the center dash .

GM/GMC-

  • 2020-2024 Trail Blazer - None Bose with ANC

This ANC bypass plugs in at the ANC amplifier under the center dash.

SUV/Crossover-

  • Under center console

FAQ

Is there another way to disable my ANC?

Yes there are a few other ways.

  1. Cut the wires at the factory amp. (absolutely not recommended)
  2. Prop the headliner and disconnect the ANC microphones (does not always work)
  3. Some vehicles have the ability to disable in the software. (this can turn back on by itself)
After about 20 minutes that I turned off my vehicle, my subs will start to make a loud rumble. Why? Is this ANC?

NO, this happens when the vehicles security system sends a signal to the radio or amplifier that triggers the LOC or amp on.

Using DC offset OR audio turn-on will fix the problem for you. This can happen with vehicles regardless of having ANC.

Where do I plug in this bypass?

There are 3 places you can and it depends on the vehicle manufacturer and equipment.

  • Factory radio
  • Factory amplifier
  • Factory ANC module

Our harnesses have a 'where to plug in at' section for each bypass harness.