Axxess GMOS-014

Aftermarket Headunit Integration Interface for OnStar, RSE & Amplified/Non-Amplified Systems in Select 2000 - 2010 GM Vehicles

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Product Features

  • GM Factory Integration Interface OnStar & Chime Retention Module
  • Can be used in non-amplified, or analog/digital amplified models
  • For 2000 - 2010 Select GM vehicles
  • Provides accessory power (12-volt 10-amp)
  • Retains R.A.P. (retained accessory power)
  • Can be used in non-amplified, or analog/digital amplified models
  • Retains chimes
  • Provides NAV outputs (parking brake, reverse, mute, and speed sense)
  • Pre-wired ASWC-1 harness included (ASWC-1 sold separately)
  • Retains OnStar/OE Bluetooth
  • Adjustable volume for chimes and OnStar
  • High level speaker input
  • USB updatable
  • Retains factory rear seat entertainment and satellite radio
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Compatibility List:

  • Buick:
    • 2005-2009 Allure
    • 2004-2005 Century
    • 2005-2009 LaCrosse
    • 2005-2007 Rainier
    • 2004-2004 Rainier*
    • 2004-2004 Regal
    • 2002-2007 Rendezvous
    • 2005-2008 Terraza
  • Chevrolet:
    • 2003-2006 Avalanche*
    • 2000-2005 Cavalier
    • 2004-2012 Colorado
    • 2005-2013 Corvette
    • 2003-2007 Express
    • 2000-2005 Impala
    • 2003-2009 Kodiak
    • 2001-2003 Malibu
    • 2004-2005 Malibu Classic
    • 2000-2005 Monte Carlo
    • 2007-2007 Silverado Classic*
    • 2003-2006 Silverado*
    • 2003-2006 SSR*
    • 2003-2006 Suburban*
    • 2003-2006 Tahoe*
    • 2007-2009 Trailblazer
    • 2002-2006 Trailblazer*
    • 2005-2008 Uplander
    • 2000-2005 Venture
  • Cadillac:
    • 2003-2006 Escalade**
    • 2003-2006 Escalade ESV**
    • 2003-2006 Escalade EXT**
  • GMC:
    • 2004-2012 Canyon
    • 2007-2009 Envoy
    • 2002-2006 Envoy*
    • 2003-2009 Savana
    • 2007-2007 Sierra Classic*
    • 2003-2006 Sierra*
    • 2005-2009 TopKick
    • 2003-2006 Yukon/Denali*
  • Pontiac:
    • 2001-2005 Aztec
    • 2001-2005 Grand AM
    • 2004-2008 Grand Prix
    • 2005-2008 Montana SV6
    • 2000-2005 Sunfire
  • Hummer:
    • 2003-2007 H2**
    • 2006-2010 H3/H3T
  • Isuzu:
    • 2003-2008 Ascender
    • 2003-2008 H Series
    • 2006-2008 I Series
  • Oldsmobile:
    • 2001-2004 Alero
    • 2002-2004 Bravada
    • 2002-2002 Intrigue
  • Saab:
    • 2005-2009 9-7
  • Saturn:
    • 2005-2007 Relay

Harness Features

Vehicle Sound System
This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
Standard Sound
Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
Chime Retention
OnStar Retention
Provides Parking Brake & Reverse Signals
Provides Vehicle Speed Sense
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.
Buick Allure
Buick Century
Buick Lacrosse
Buick Rainier
Buick Rendezvous
Buick Terraza
Cadillac Escalade
Chevy Avalanche
Chevy Cavalier
Chevy Colorado
Chevy Corvette
Chevy Express Van
Chevy Impala
Chevy Malibu
Chevy Monte Carlo
Chevy Silverado
Chevy SSR
Chevy Suburban
Chevy Tahoe
Chevy Trailblazer
Chevy Uplander
Chevy Venture
GMC Canyon
GMC Envoy
GMC Savana
GMC Savana Van
GMC Sierra
GMC Yukon
Hummer H2
Hummer H3
Isuzu Ascender
Isuzu I Series
Oldsmobile Alero
Oldsmobile Bravada
Oldsmobile Intrigue
Oldsmobile Silhouette
Pontiac Aztek
Pontiac Grand Am
Pontiac Grand Prix
Pontiac Montana
Pontiac Sunfire
Saab 9-7
Saturn Relay

Premium Harness Features

On-Star Compatible
This means that the harness is compatible with vehicles that have On-Star built-in.
CAN-BUS Compatible
CANBUS Ballasts ensure compatibility with ALL vehicle makes and models without the need for additional accessories. In addition, they have built-in Anti-Flickering Capacitors to help prevent lighting issues caused by voltage spikes and drops by stabilizing the power.
GM-LAN Compatible
This means that the item is compatible with GM-LAN systems.
Compatible with Aftermarket Navigation Systems
This means that the item is made to work with aftermarket systems with navigation. Typically, this means that the harness has wires that are used with GPS navigation systems, such as VSS wires and others. Please read the product description for full details of this feature.
Chime Retention
This means that the harness is able to retain the vehicles chimes.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Big D


NOT so Great Value!!!!

March 2, 2012

This unit worked in my 2005 GMC Yukon SLT. Almost. I had two of them (returned for another), and it did allow audio, chimes, and OnStar. It also produced a hissing sound in my speakers which can be heard between tracks and especially in AUX, and it did NOT work to allow the rear seat DVD audio to play through the new radio. The rear dvd would product VERY faint audio (with alot of hissing getting louder with volume), unless the factory radio was installed. It's clear that some data needs to go over the class II bus to tell the dvd player to output line audio. In my opinion, its a very overpriced POS!!!

19 of 22 found this helpful

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Cheyenne, WY

Great product

March 13, 2014

Worked as advertised except the dimmer light wire did not work and the rear entertainment only partially work. Installed in 2005 Hummer H2

15 of 18 found this helpful

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billings, MT

works great, just as advertised

October 19, 2011

Easy install, one small problem that was solved quickly by tech support. Seems like a solid product.

13 of 16 found this helpful

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Hamilton, OH

Worked well

May 8, 2014

Used this to crossover my 2008 Hummer H3 factory radio to a Clarion NX602. Worked perfectly. The only question was about and extra hookup for an orange/white wire...head unit had only one, while harness had a lead off the chime unit and off one of the adapter plug. This has to do with illumination on the head unit. I called tech support and got a young man who said not to hook it up unless the head unit had two leads also or it wouldn't work. I hooked the head unit lead to the adapter plug lead, but haven't driven yet at night to see if the day/night illumination feature works. Regardless, its sufficiently bright to have a nice, clear picture on the head unit display, day or night. Everything else works perfectly. A little time consuming hooking all the wires to the radio harness, but in the end well worth it to just plug and play.

13 of 17 found this helpful

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Browse 4 questions and 7 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Cheaper than local sound shops for same product.
Chuck T on Aug 7, 2016
Made the installation really easy
Drake M on Sep 21, 2015
Needed the on star and bose to remain in my truck, this is the only harness that keeps all of the factory stuff when you put in a new head unit.
Cody C on Dec 4, 2015
difference between axxess gmos-014 and axxess gmos-04 harnesses? My vehicle is 2007 Saab 9-7x with bose ( Im taking I have bose, thats what comes on radio screen with I turn it on)
reggie m on Aug 12, 2014
Best Answer: Hello,

The biggest difference between the 014 vs the 04, is the GMOS-014 provides retention of Rear seat entertainment (RSE) . It seems like the Axxess GMOS-04 is going to be the best option for you.
Reply · Report · Customer SStaff on Aug 12, 2014
· Add Answer · I Have This Question Too (1)
The biggest difference between the 014 vs the 04, is the GMOS-014 provides retention of Rear seat entertainment (RSE) . It seems like the Axxess GMOS-04 is going to be the best option for you.
thanks for your answer to the gmos-014 and the gmos-04 difference. Since i have RSE, shoud i get the gmos-014 instead of the gmos-04?
reggie m on Aug 13, 2014
· Add Answer · I Have This Question Too (0)
i am trying to replace a factory stereo in my 2006 chevy trailblazer LS. No Bose, but On star, which I do not car if it is hooked up. I also have RSE that playes through factory stereo. What adaptors would i need to install a new stereo?
gissy on Dec 16, 2015
Best Answer: The Axxess GMOS-014 will do just what you need. If you have steering wheel controls you will need the Axxess ASWC-1.
Reply · Report · Daniel G on Dec 16, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


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Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Axxess GMOS-014

Item Added to Cart

Axxess GMOS-014

Aftermarket Headunit Integration Interface for OnStar, RSE & Amplified/Non-Amplified Systems in Select 2000 - 2010 GM Vehicles


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