2003 Chevrolet Tahoe Car Audio Installation Guide

2003 Chevrolet Tahoe Car Audio Installation Guide

Whether your an expert Chevrolet Tahoe mobile electronics installer, Chevrolet Tahoe fanatic, or a novice Chevrolet Tahoe enthusiast with a 2003 Chevrolet Tahoe, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2003 Chevrolet Tahoe 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 Chevrolet Tahoe.

The Modified Life staff has taken all its Chevrolet Tahoe car radio wiring diagrams, Chevrolet Tahoe car audio wiring diagrams, Chevrolet Tahoe car stereo wiring diagrams, Chevrolet Tahoe car radio wiring schematics, Chevrolet Tahoe 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 Chevrolet Tahoe part or component.

Feel free to use any Chevrolet Tahoe 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 Chevrolet Tahoe wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Chevrolet Tahoe.


If you have any questions pertaining to the audio system in the 2003 Chevrolet Tahoe, 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.

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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 Chevrolet Tahoe Car Audio Installation Guide

Radio Constant 12V+ Wire: Orange
Radio Ignition Switched 12V+ Wire: Class 2 Serial Data
Radio Ground Wire: Black/White
Radio Illumination Dimmer Wire: N/A
Radio Antenna Trigger Wire: Dark Green
Radio Amplifier Trigger Wire: Pink (If equipped, the amplifier is under the center console.)
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Green
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Light Blue

The 2003 Chevrolet Tahoe radio wire color information above is updated as it is submitted by the Modified Life community.

14 Replies to “2003 Chevrolet Tahoe Car Audio Installation Guide”

  1. 2002 Tahoe. Legacy detachable video player. Hooked it up, all functions working no sound. Any advice appreciated.

  2. Raoul, your 2003 Chevrolet Tahoe may have a factory amplifier that needs to be turned on by your after market radio. The car stereo amplifier trigger wire has to be wired up to turn on the factory amplifier in your 2003 Chevrolet Tahoe. Hope this helps. Good luck.

  3. I found out from a local stereo shop that the wire colors are consistant with On-Star equiped auto’s. The correct harness adapter is $150 if you want to keep the On-Star feature.

  4. Let me go a head and clear this up once and for all!!!

    Heres the backgound of the problem: I installed a aftermarket indash in my 2004 tahoe all the lights and the screen came speakers played but went out after 10mins im a stereo guy so this freaked me out what I didnt know was that there is an internal amp built in to all SUVS that must be turned on so i searched for a way around after a couple of bogus forums and a few rude chevy tahoe forums I was about to throw in the towel with my install and pay someone to do it but being the stubborn person i am i decided to call my local audio shop for tips(i mean seriously why pay these guys 100bucks when im like reallly close to fixing this thing)

    Solution: If you have an aftermarket stereo or Indash dvd/TV and you have a tahoe/suburban/yukon from the years of 2000-2004 all you have to do is cut the pink wire loose from the Onstar harness loose(This wire power the internal amp in your truck and tells the speakers to turn on) and connect it to the orange wire on the factory stereo harness(12v power wire always stays on when your vehicle is on) and your aftermarket stereo/indash will work fine

    No bull No smoke and mirrors no technical jargon your gonna forget just follow these steps after wiring your aftermarket harness up to your aftermarket stereo/Indash and it will work fine dosent matter the name brand of the unit it will work and if someone tells you to rewire all the speakers from the amp kick them square in the nutz for being stupid. Im not a professional but I am technical and this will work

  5. Hey Chico. I have a 2002 avalanche and your comment has helped me big time! but when I switch my key to the off or accessory position, the speakers die. any thoughts there? thanks, Max

  6. Max, i’m not at home rite now but i will give u full details when i get home. do u have an aftermarket amp powering some subs?

  7. Ok well I have the same probs with my tahoe and Im guessing it has something to do with the radio the pink wire we spliced into the aftermarket from the onstar system from what i read it only turns on when the car is fully cranked up I kinda like it if you think about it your actually saving ur altenator in ur car since it only cuts on when the truck is turned on as of now im not sure on how to fix that but it hasnt been a great inconvience…….

    if u need help with any other probs on ur gm truck hit me up and will do my best to help you out

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