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CRUX SOOGM-15 GM Wiring Interface

Connect a new stereo and retain OnStar®, warning chimes, factory amp, and steering wheel controls in select 2000-up GM vehicles

Item # 249SOOGM15

Replacing the factory radio in many late model GM vehicles means losing the chime that warns the door is open,...

Find what Fits your car

Replacing the factory radio in many late model GM vehicles means losing the chime that warns the door is open,...

Item # 249SOOGM15

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About the CRUX SOOGM-15 GM Wiring Interface

Replacing the factory radio in many late model GM vehicles means losing the chime that warns the door is open, along with audible safety warnings. Also, your new car stereo will not work with your GM steering wheel audio controls.

You'll only be able to retain your steering wheel audio controls with a compatible car stereo made by Alpine, Clarion, Dual, JVC, Kenwood, Pioneer, or Sony. No other brands are currently compatible. Check the Details tab to see if steering wheel audio controls are retained in your vehicle.

Replacing the factory radio in many late model GM vehicles means losing the chime that warns the door is open, along with audible safety warnings. Also, your new car stereo will not work with your GM steering wheel audio controls.

The SOOGM-15 GM Class II Data Bus interface from Crux lets you install an aftermarket receiver in these vehicles and keep the door chimes, all audible safety warnings, and OnStar functionality in select GM vehicles. You'll also retain the use of your factory steering wheel controls in most vehicles (see the compatibility chart in Details — vehicles that do not retain use of steering wheel controls are marked by an asterisk).

Connect the SOOGM-15 to the wiring harness on your new car stereo, mount the module in a convenient location, and plug it into the existing factory plug. Get the great sound you want, and keep all important safety features intact. The SOOGM-15 interface works with all GM audio systems, including Premium Bose® . Warranty: 1 year.

Important Note: If you do not use an interface like this when you replace your factory radio, you will disable the audible warning system in your vehicle. Crutchfield cannot provide a free wiring harness for your vehicle, and we strongly recommend that you use the recommended interface when replacing this vehicle's factory radio. Failure to do so may result in serious injury or death.

Installation Note: If your vehicle has a factory amplifier, you'll lose fader and balance control with the new car stereo. You'll want to set your system's balance and fader controls correctly before installing the new car stereo, as those settings are retained after you've pulled out the old radio.

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Highlights:

  • lets you install an aftermarket receiver in late model GM vehicles without losing the door chime and audible safety warnings
  • works with any Bose® system, retains OnStar® functionality
  • retains steering wheel audio controls with a compatible car stereo in most vehicles (see chart in Details)
  • dimensions: 3-7/16"W x 1-1/16"H x 2-7/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # SOOGM-15
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What's in the box:

  • 2000-up GM Class II radio replacement interface module (w/ OnStar and SWC retention)
  • 15" GM Class II wiring harness (w/ SWC connector)
  • Bose adapter
  • Antenna adapter
  • Installation Instructions

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Features

Overview: The CRUX SOOGM-15 radio replacement interface is designed to allow the installation of an aftermarket radio while retaining functionality of OnStar, Bose Amplified and Non-Amplified Systems, Chime, and Accessory features in a wide range of GM Class II Data bus vehicles. The SOOGM-15 is a versatile and enhanced OnStar retention interface that includes steering wheel control options. It retains a wide range of factory OEM features with aftermarket radios:

  • Works with Non-Bose, Bose, Premium Sound, and Y91 amplified radios (use included Bose adapter if your vehicle is equipped with a factory Bose audio system).
  • Retains Factory OnStar and steering wheel controls for most vehicle models (steering wheel incompatibility noted in the table below)
  • 12 Volt Accessory output (4 Amp), including RAP (Retained Accessory Power), keeps the radio powered after the key is off, until the driver door is opened or the OEM timer ends, whichever happens first
  • Illumination Output (2A. max)
  • Telephone Negative Mute Trigger (Input)
  • Low Voltage (Battery Run-Down Protection)
  • Retains safety & warning chimes
Note: You'll only be able to retain your steering wheel audio controls with a compatible car stereo made by Pioneer, Sony, Jensen, Dual, Alpine, Clarion, Kenwood, and JVC. No other brands are currently compatible.

Vehicle Compatibility: The CRUX SOOGM-15 radio replacement interface works with the following 2000-up GM vehicles with Class II system (as of 9/10/2012):

Make Model Year
Buick
Lacrosse* 2005-2009
Rainer 2004-2007
Rendezvous* 2005-2007
Terraza 2005-2007
Cadillac
Escalade 2003-2006
Escalade EXT/ESV 2003-2006
Chevrolet Avalanche 2003-2006
Blazer S-10 2003-2005
Cavalier 2000-2005
Colorado 2004-2012
Corvette 2005-2007
Corvette* 2008-2010
Express Van 2003-2006
Impala*/Impala SS 2000-2005
Malibu 2001-2003
Malibu (Classic) 2004
Monte Carlo* 2000-2005
Pickup S-10 2004
Silverado Z71* 2003
Silverado 1500-3500 2003-2006
Silverado 1500-3500 (Classic) 2007
SSR 2004-2006
Suburban 2003-2006
Tahoe 2003-2006
Trailblazer 2002-2009
Uplander 2005-2008
Hummer H2 2003-2007
H3/H3T 2006-2007
GMC Canyon 2004-2012
Envoy 2004-2009
Envoy XUV 2004-2007
Savanna 2003-2007
Sonoma 2002-2004
Sierra 1500-3500 2003-2006
Sierra 1500-3500 (Classic) 2007
Yukon/XL 2003-2006
Isuzu i280/i290/i350 2006-2008
Ascender 2002-2004
Oldsmobile Alero (w/ RDS radio)* 2002-2004
Bravada 2002-2004
Intrigue 2002
Silhouette 2000-2004
Pontiac Aztek* 2001-2005
Grand Am* 2001-2005
Grand Prix* 2004-2008
Sunfire 2000-2005
Saturn Relay 2005-2007
Note: Where noted with an asterisk (*), the factory steering wheel controls are not retained. Please consult Crutchfield's Outfit My Car to confirm compatibility in your specific vehicle.

GM Class II Harness: The included GM Class II wiring harness features a 24-pin & 4-pin connector which plugs into your vehicle's factory radio harness, plus a 14-pin & 12-pin connector which plugs into the SOOGM-15 interface module. The GM Class II wiring harness also provides the following bare-wire leads which will need to be hardwired to your aftermarket head unit's wiring harness or vehicle wiring.

Wire Color Function
Black Chassis Ground
Red +12 Volt Accessory
Yellow +12 Volt Constant
Red/Black VSS (vehicle speed sensor)
Orange Illumination
Orange/White Panel lamp
Blue/White Amp Turn-On
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -
Lt Blue/Yellow Steering Wheel Control
Brown Mute

Steering Wheel Control Cable: The included GM Class II wiring harness also features a steering wheel control output for Pioneer, Sony, Dual, Alpine, Clarion, Kenwood, and JVC aftermarket head units. The steering wheel control output consists of a right-angle 3.5mm connector and a light blue/yellow wire (use the connection that your aftermarket head unit is fitted with). The SOOGM-15 interface module will work with any of the listed aftermarket head units, by using its rotary dial (0-5) for appropriate setting.

Installation Note: For vehicles with factory Y-91 Bose Premium audio systems, once you have installed the new aftermarket head unit you will no longer have fader control. Make sure that before removing your factory radio, your system's audio is balanced and faded properly. The factory digital amplifiers will remember these settings even after the factory radio is removed and the new aftermarket head unit is installed.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
to interact with my steering wheel controls on my truck [ hotrod57  Jun 15, 2016 ]
A
Wanted to retain factory steering wheel control, radio antenna and door chimes. [ Jason  Dec 10, 2015 ]

4 questions already asked

Q
Can you use this on ,2005 tahoe ls with on star no bose?
[ Pdogg  Aug 26, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Aug 26, 2015 ]  Staff
Q
Thinking about getting an aftermarket radio system for my 06 Chevy Avalanche with OnStar but without Bose I was wondering if with this system do I have to cut ANY of the factory wiring or is it all plug and play?
[ mbz300sdl  Aug 02, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Aug 02, 2015 ]  Staff
Q
Seemed to work fine in 2006 Chevy Silverado. Steering wheel and volume controls worked fine. However after I updated the firmware on my AVH-4000NEX the steering wheel controls no longer work. Strange or is this a known bug?
[ Scott  Nov 23, 2014 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website.
[ Jeff  Nov 24, 2014 ]  Staff
Q
When using this adaptor can you still use the rear seat entertainment system?
[ Bryan  Mar 07, 2014 ]
3 answers
A
brian, the truck did not have a rear ent. system. sorry steve
[ STEVE  Mar 10, 2014 ]
A
Yes because it still plug directly to the factory harness. Which mean you have control of all your features.
[ SHAWN  Mar 09, 2014 ]
A
Sorry my vehicle does not have a rear seat feature. Unit works great though.
[ JOE  Mar 09, 2014 ]

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