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Welcome to our new Site We are adding some final touches. For other T-harnesses Options please visit Thank you
Welcome to our new Site We are adding some final touches. For other T-harnesses Options please visit Thank you
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.

Cadillac Bose ANC bypass harness with 12+ speakers w/ RPO UQG 2021-Up


Scan your vehicles QR Code to get the vehicles RPO codes. This is a silver sticker that can be located on the drivers door jam or trunk door lip.

Image 1 Description
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
in stock, ready to be shipped


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.

Cadillac Bose ANC bypass harness is a must have in any Cadillac vehicle with Bose. The Cadillac ANC bypass harness will need to be installed at the Bose amplifier to bypass it in order to prevent back feed from the after market subwoofer. The Cadillac ANC bypass harness is plugged in at the Bose/AKG amplifier In the trunk of the cars or in the rear driver quarter panel in SUV's.   

For Vehicles with UQG electronics option code with ANC.

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, Cadillac and Buick vehicle with the BOSE/None Bose amplifier with ANC.

  • 2021-2025 ONLY
  • RPO code UQG
  • Microphone will be in the rear part of the vehicle in the headliner. (microphones above the driver of passenger seat are for Bluetooth)

Some vehicles have the amplifier but not the tunning and use the same connectors and ANC features.

This ANC bypass plug in at the amplifier.


  • Rear wall


  • Trunk over wheel well
  • Under center console


  • Trunk behind the taillight over wheel well


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.