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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...

Item # 120GMOS044

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C$209.99

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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Axxess GMOS-044 Wiring Interface reviews

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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

Q
Crutchfield asked: Why did you buy this?
A
Need to wire my new radio to my vehicle. [ Cruz  Apr 07, 2019 ]
A
Needed to retain all my factory annoying dings. [ Zach  Mar 02, 2019 ]
A
Needed for install [ Dakota  Dec 01, 2017 ]
A
Wanted to keep the install as simple as possible. [ Eddie  Sep 02, 2017 ]
A
Retains factory amp in Chevy Cruze and onstar and all warning chimes. Also alows the factory radio screen to be customized to say anything you want! [ Travis  Sep 22, 2016 ]
A
needed this as well [ William  Sep 15, 2016 ]
A
to have all the abilities this stereo has to offer. [ Tristan Michael  May 04, 2016 ]
A
need to install aftermarket radio [ Erik  Apr 29, 2016 ]
A
My car called for it to hook up aftermarket stereo [ Richard  Feb 17, 2016 ]
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3 questions already asked

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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