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Axxess GMOS-044 Wiring Interface

Connect a new car stereo and retain OnStar® and safety warning chimes in select 2011-up GM vehicles

Item # 120GMOS044

The Axxess GMOS-044 GM interface lets you replace the factory radio in select OnStar-equipped 2011-up GM vehicles...

Find what Fits your car

The Axxess GMOS-044 GM interface lets you replace the factory radio in select OnStar-equipped 2011-up GM vehicles...

California customers:
Please click here for your Proposition 65 warning.

Item # 120GMOS044

In stock
$179.99

About the Axxess GMOS-044 Wiring Interface

The Axxess GMOS-044 GM interface lets you replace the factory radio in select OnStar-equipped 2011-up GM vehicles using the existing wiring and connectors. Even if you don't subscribe to OnStar, you'll need this interface to connect an aftermarket stereo.

The Axxess GMOS-044 GM interface lets you replace the factory radio in select OnStar-equipped 2011-up GM vehicles using the existing wiring and connectors. Even if you don't subscribe to OnStar, you'll need this interface to connect an aftermarket stereo.

Connect the GMOS-044 to your aftermarket radio, mount the module, and plug it into the existing factory plug. Get the great sound you want, and keep all of the important safety features intact. You can adjust volume settings for OnStar as well as the safety chimes. This interface gives you convenient plug-in connections for the Axxess steering wheel control adapter (not included) that works with most aftermarket stereos – that means less wiring work for you.

This interface is compatible with select 2011-and up General Motors vehicles. If you haven't done so already, please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this item is compatible with your vehicle. Warranty: 1 year.

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What's in the box:

  • GM OnStar/chime retention interface module
  • Connecting harness with multiple connectors: 22-pin / 16-pin / 12-pin / 30-pin / 2 RCAs / Minijack / Relay
  • Installation Instructions
MFR #GMOS-044

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More details on the Axxess GMOS-044 Wiring Interface

Stacey B.

Product Research

Features

Overview: The GMOS-044 lets you replace the factory radio in select GM vehicles with an aftermarket head unit. It works in both amplified and non-amplified factory audio systems and is designed to retain OnStar and the warning chimes that are normally lost when the OEM radio is removed. It also provides a 12-volt accessory output for aftermarket radio operation. Additionally, the GMOS-044 provides a Mute, Parking Brake, VSS (speed sense), and Reverse outputs to make installing an aftermarket navigation unit less time consuming.

Vehicle Compatibility: The GMOS-044 works in select GM vehicles. Please consult the Crutchfield Car Selector to confirm compatibility with your specific vehicle.

OEM Steering Wheel Control Compatible (optional): The GMOS-044 features a right-angle 3.5mm connector that lets you keep your GM vehicle's OEM steering wheel controls via the optional Axxess Steering Wheel Control Interface (120ASWC1, sold separately).

Note: The GM vehicle must have factory steering wheel controls to retain access to the factory customization menu, once the factory radio is replaced with an aftermarket head unit.

OnStar & Chime Volume Adjustment: The volume is adjustable for both the OnStar output and the warning chime.

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Customer Q&A

5 questions already asked

Q
Quick question I notice this can be used for a Chevrolet but is it a certain type of Chevrolet it can be used for ? cause I have a Chevy Equinox 2012 and I notice most of these parts they don't have for my car .
[ Zechariah j  Oct 28, 2020 ]
2 answers
A
I have a 2011 and it worked. I did not have the GPS color display unit. Not sure if that would matter.
[ michael  Oct 28, 2020 ]
A
Hello. I have a Chevy Equinox 2013 and the part worked perfectly for my vehicle.
[ Anthony  Oct 28, 2020 ]
Q
Does this retain the color factory display in the ltz model 2014 chevy cruze? I don't see several of the required connectors that run to the display.
[ Robert  Jun 06, 2019 ]
3 answers
A
yes it retains the factory display but not the color.
[ janice  Jun 07, 2019 ]
A
If you are asking about the display that shows temps and time, then yes. it works. although you need to set it from the steering wheel controls. I googled the procedure.
[ Eddie  Jun 06, 2019 ]
A
Yes it does. Everything is color coded.
[ IRWIN H  Jun 06, 2019 ]
Q
Does this retain the monochromatic display?
[ Vegaman434  Mar 10, 2019 ]
1 answer
A
Yes listen to these guys they have been a great help on all levels
[ RICHARD  Mar 10, 2019 ]
Q
Does it support rear parking assist sensor warning sounds?
[ Darrell  Mar 30, 2014 ]
1 answer
A
Good question! However I am not sure if it retains the reverse warning chime. My car doesnt have that feature. I would suggest you give a call into axxess support before you buy. Their number can be found on axxessinterfaces dot com. they have much more know how on these gmos harnesses than Crutchfield support does. They can be tricky. I tried doing it myself once and it didn't work out well. Crutchfield sent me a replacement and I just broke down and had the local big box store put it in for 95 bucks. Works flawlessly now. Don't know if it was me or the first unit I had. Oh well. Good luck!
[ Michael  Mar 31, 2014 ]
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