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Black ABS plastic wire harness with multiple coloured connectors and 72 inch leads

Axxess Technologies

Axxess Technologies AXEXH-GM09 GM Extension Harness 72

SKU CH-JRD4-711HT

Extension harness bypasses the factory amplifier when fitting an aftermarket stereo to compatible Cadillac, Chevrolet and GMC models from 2014 to 2021

  • Product typeWire Harness
  • Install an aftermarket stereo without cutting factory wiring
  • Bypass the factory amplifier using the original M.O.S.T. connector
  • 72-inch leads reach the radio or amplifier location
  • Includes plugs for power, ground, speakers, center channel and subwoofer
  • ABS plastic construction delivers factory OEM quality

Axxess GM Extension Harness for 2014-2021 Vehicles

This harness enables aftermarket stereo installation in select Cadillac, Chevrolet and GMC models from 2014 through 2021. It plugs into the factory M.O.S.T. amplifier to bypass it without cutting any original wiring. The 72-inch leads reach the new radio or amplifier location cleanly.

Installation simplicity and common pitfalls

The harness connects directly to the factory amplifier plug, so no splicing or crimping of the vehicle loom is required. Routing the 72-inch leads through trim panels is the main task; allow enough slack to avoid tension on the connectors. The ABS plastic housings resist vibration but can crack if forced into tight gaps.

Verify your vehicle and amplifier location

Confirm the exact model year and, for Traverse, Canyon and Sierra 2500/3500, the RPO code IO5 or IO6 listed in the fitment data. Ensure the factory M.O.S.T. amplifier is accessible and that the 72-inch length reaches your planned mounting point for the aftermarket unit.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $38.99
Pricier than about 69% of the 2,768 comparable items (median $21.99).

Specifications

Product
Product typeWire Harness

Questions about this item

How can I confirm the AXEXH-GM09 harness is working correctly after installation?

Verify the aftermarket stereo powers on, all speakers including center channel and subwoofer produce sound, and no factory features are lost.

What connections are included with the AXEXH-GM09 and what must I source separately?

The harness includes plugs for power, ground, speaker, center channel and subwoofer leads. You supply the aftermarket radio or amplifier.

Which vehicles does the AXEXH-GM09 support for 2019-up installations?

It fits Cadillac Escalade 2015-2019, Chevrolet Silverado 2014-2019, Suburban 2015-2021, Tahoe 2015-2020, GMC Sierra 1500 2014-2015, Sierra 2500/3500 2015, Yukon 2015-2020 and other listed models.

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