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Axxess GMOS-04 Wiring Interface

Install a new car stereo and retain the safety warning chimes in select 2000-2023 vehicles from GMC, Chevrolet, Pontiac

Axxess
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• Provides 12-Volt accessory power (RAP)
• Designed for amplified models
• Retains balance and fade
• Micro-B USB Updatable
• Pre-Wired for ASWC-1 (Sold separately)

See compatible vehicles Learn more about the gmos04

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Description


Axxess brand icon

Authorized dealer

Product Features:

  • Compatible with select 2000-2023 vehicles from GMC, Chevrolet, Pontiac
  • Designed to install a new aftermarket car stereo
  • Provides accessory power (12-volt 10-amp)
  • Retains R.A.P. (retained accessory power)
  • Provides NAV outputs (parking brake, reverse, and V.S.S)
  • Retains all safety and warning chimes
  • Retains OnStar / OE Bluetooth
  • Adjustable OnStar level
  • Micro-B USB updatable
  • Designed for amplified models
  • Retains balance and fade
  • USB-CAB (sold separately) updatable
  • Pre-Wired for Axxess ASWC-1 steering wheel audio control adapter (Sold separately)
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Axxess AXDIS-CL2 thumbnail
(newest, current model)
Axxess GMOS-04 thumbnail
(previous model, replaced by Axxess AXDIS-CL2)

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 1994 Eagle Talon is not compatible. Change vehicle or See list of compatible similar products


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Specifications & Details


Harness Features
Vehicle Sound System
Premium Sound
Main Harness Function
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
Chime Retention
OnStar Retention
Retained Accessory Power (RAP) Retention
Premium Harness Features
Factory System Amplification
Amplified
Compatible Premium Audio Systems
Premium Bose
Standard Bose
On-Star Compatible
Yes
Compatible with Aftermarket Navigation Systems
Yes
Chime Retention
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

GMOS-04

Weight:

0.51lbs

Internal SKU:

gmos04

Internal Product ID:

12901

Customer Ratings & Reviews


Axxess GMOS-04 Wiring Interface thumbnail image

5 star
78%
4 star
13%
3 star
0%
2 star
0%
1 star
9%



Durability
4.4
Value
4.3
Features
4.4
Design
4.3
Usability
4.4

Customer Reviews

Sort by:

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It works

It works. Every once in a while there is a glitch, but if I turn off the car and turn it back on, everything works OK.

You need room for the box nearby the radio. Its not the easiest setup in the world. I had to add some RCA connectors to make it work for my setup. I also had to run a separate dimmer light for my radio (the harness from my car didn't have a dimmer wire).

Here is my setup:
2001 Impala
Metra GMOS-04 - converter necessary for GM Car
PAC SWI-PSv1 - Steering wheel controls
iPod Classic
XM SkiFi3 radio used through Aux port
Alpine MRP-F300 amp
Kenwood KFC-X1710 front speakers
Kenwood KFC-X692 rear speakers
Bluetooth with Sprint Mogul phone & Motorolla RAZR phone

By A Guy on September 26, 2009

46 found this helpful


great product

intalled in my 05 gmc sierra...works great without issues so far. installation was easy as it came with a simple installation guide

By louis on November 14, 2009

44 found this helpful


Great interface

Took a minute to figure out but works as advertised

By Jeff on January 23, 2015

41 found this helpful


Great value

I purchased the GMOS-04 for my 05 burban & the install was so easy , I would definitely recommend this product to anyone , for the price u just can't beat it , also if u install yourself u save about 400.00

By cheetah on October 21, 2013

41 found this helpful


Doesn't work properly

Order the product for my 2006 gmc can't get it to work sounds like it's muted or shorted out inside followed instruction check all connections still can't get proper sound not pleased at all

By john on March 23, 2015

38 found this helpful


Axxess GMOS-04 makes it easy.

It was actually harder to find the right adapter from the dealer here in town than it was to hook this one up. It went together very easily and quickly and works flawlessly. I am quite pleased.

By Donald on December 22, 2010

38 found this helpful


almost flawless

piece of cake... works great with my Bose system... only gripe would be level matching being separate for left and right channel.. some would call it a bonus. i would call it a pain... this is why stereo manufacturers include a balance feature in the head unit

By jeffrey on December 10, 2009

38 found this helpful


good product

This product I purchased works very good the price was very reasonable and works real good for my onstar in my Buick lacrosse.

By big cuz on September 5, 2013

35 found this helpful


GMOS-04

It is very easy to install. If you have an internally amplified sound system you do hear some interference. Overall the product is not bad, but it would be nice if it did not make so much noise past a certain volume level.

By Jeff on December 2, 2009

35 found this helpful


Easy to install

Very easy to install compared to other editions of this kit made by cheaper manufactures. Highly recommend.

By josh on September 25, 2014

34 found this helpful



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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.