2003 GMC Yukon Car Radio Wiring Guide

Whether your an expert GMC Yukon mobile electronics installer, GMC Yukon fanatic, or a novice GMC Yukon enthusiast with a 2003 GMC Yukon, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2003 GMC Yukon vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.

One of the most time consuming tasks with installing an after market car stereo, car radio, satellite radio, xm radio, car speakers, tweeters, car subwoofer, crossovers, audio equalizer, car amplifier, mobile amp, car amplifier, mp3 player, ipod or any car audio electronics is identifying the correct color car audio wires for your 2003 GMC Yukon.

The Modified Life staff has taken all its GMC Yukon car radio wiring diagrams, GMC Yukon car audio wiring diagrams, GMC Yukon car stereo wiring diagrams, GMC Yukon car radio wiring schematics, GMC Yukon car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 2003 GMC Yukon part or component.

Feel free to use any GMC Yukon car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the GMC Yukon wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 GMC Yukon.


If you have any questions pertaining to the audio system in the 2003 GMC Yukon, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.

Request a Car Stereo Wiring Diagram

If you can’t find a particular car audio wire diagram on Modified Life, please feel free to post a car radio wiring diagram request at the bottom of this page and we’ll do our best to find you the diagram or schematic you need for your mobile audio installation.

Adding More Information

If you would like to help the Modified Life community by adding any missing information or adding a new car audio wire diagram to our resource, please feel free to post it at the bottom of this page.

2003 GMC Yukon Car Radio Wiring Guide

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox or ignition switch harness for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

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  • Reply JAMES BENSON May 9, 2009 at 6:19 pm


  • Reply ModifiedLife May 20, 2009 at 3:06 am

    James, ask and you shall receive: 2002 GMC Yukon Car Stereo Wiring Diagram

  • Reply Jerimiah Messer November 4, 2009 at 5:11 am

    My 2003 Yukons radio is not putting out ant sound. It was cutting out occasionaly but is out now. The radio is stock and turns on display works just no soun at all. What should i do?

  • Reply ModifiedLife November 16, 2009 at 1:28 am

    Jeremiah, it sounds like either your factory stereo has gone bad or the factory amplifier is faulty. It would take some installation know how to troubleshoot your stereo problem. We suggest you take your car to an experienced audio installer and have them troubleshoot your audio system. Hope this helps. Good luck.

  • Reply Shawnee August 27, 2010 at 1:13 pm

    My 2003 Yukon radio makes a buzzing noise. It gets louder as I accelerate. How can we fix this?

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