2003 Chevrolet Silverado Car Stereo Installation Diagram

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Whether your an expert Chevrolet Silverado mobile electronics installer, Chevrolet Silverado fanatic, or a novice Chevrolet Silverado enthusiast with a 2003 Chevrolet Silverado, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2003 Chevrolet Silverado 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 Silverado headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!

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

Feel free to use any Chevrolet Silverado 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 Silverado 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 Silverado.

Questions

If you have any questions pertaining to the audio system in the 2003 Chevrolet Silverado, 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 contact us at: contact form or post it at the bottom of this page. The 2003 Chevrolet Silverado radio wire color information above is updated as it is submitted by the Modified Life community.

2003 Chevrolet Silverado Car Stereo Installation Diagram

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Class 2 Serial Data
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Red/Blue
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Pink
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

97 thoughts on “2003 Chevrolet Silverado Car Stereo Installation Diagram”

  1. I have a 2003 chevy silverado ss with a bose system and it lost all sound I just bought a new touch screen sound storm radio and I am wondering if I should buy the harness kit and run it through the amp and see if it works or bypass the amp and I was also trying to find out about a steering wheel controls adapter for the bose to a sound storm can you help? anyone know?

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  2. Steven, yes this is the correct stereo wiring. The 2003 Chevrolet Silverado 2500 brake wire is located at the emergency brake. The 2003 Chevrolet Silverado 2500 reverse wire is the light green wire and is pin F in the black plug at the BCM module. Hope this helps. Good luck with your 2003 Chevrolet Silverado 2500 stereo installation.

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  3. I have a 2003 silverado 2500 hd is this used as the same diagram? Also I wired it using this diagram and I have 3 wires not used its a brake wire reverse wire and illuminate wire. What do I use those wires for? Or where would I hook them up too?

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  4. Brad, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester and making sure all of your fuses are not blown. If all of your fuses are good, check your after market radio connections behind your head unit. If all your wire connections are good, take a look at your battery terminals wires. Sometimes when your 2004 GMC Sierra battery wire terminals are not in full contact with battery posts because of corrosion, your radio could cut in and out. Try removing your battery wire terminals from the battery, clean them with a battery terminal cleaner and re-install. Hope this helps. Good luck with your 2004 GMC Sierra radio troubleshooting.

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  5. I installed a aftermarket cd player in my 2004 gmc sierra using the wiring harness with chimes. It turns on, but sometimes shuts off after truck ignition. Any ideas?? thanks

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  6. I have a problem with my factory radio in my 2003 chervolet Silverado, when the ignition is off the radio is still pulling approx. 2 amps. Please could someone point me in the right direction to solve this problem?? Tried switching factory radios still had the same problem. anyone?

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  7. I was wondering about the red light flashing on my 2003 chevy silverado factory stereo. Will it hurt anything when i unhook my factory stereo to put an aftermarket one in?? I heard it was a security light and it could lock something up. is that true?

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  8. Flippy, double check ALL your fuses using a Automotive Fuse Tester because certain vehicles may have a wire tied into another circuit not labeled as car radio. You may have additional fuse boxes by the driver side of the dash, passenger side of the dash, driver kick panel, passenger kick panel, under the steering column or under the hood. If all of your fuses are good, your 2003 Chevrolet SS Truck factory amplifier (if equipped) may be faulty. We suggest you take your car to an experienced audio installer and have them troubleshoot your problem. Hope this helps. Good luck with your 2003 Chevrolet SS Truck radio troubleshooting.

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  9. my 2003 chev ss truck has a factory bose 6 disc stereo . radio stopped working. it lights up and seems to pick up radio chanel but no sound and i lost all my warning chimes. is this common and is there a reset or is my internal amp gone

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  10. I have a 2003 Chevrolet Silverado. I bought the recommended wiring harness and it came with a chime box and everything. When I took out the factory radio all that’s back there is the 24-pin plug. Why do I even have a chime box and all of these other plugs in the harness kit? anyone?

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  11. Jeremy, double check ALL your automotive fuses using a Automotive Fuse Tester because certain vehicles may have a wire tied into another circuit not labeled as car radio. You may have additional fuse boxes by the passenger kick panel, driver side of the dash, driver kick panel, passenger side of the dash, under the steering column or under the hood. If all of your automotive fuses are not blown, your 2003 Chevrolet Silverado factory amplifier (if equipped) may be faulty. We suggest you take your car to an experienced mobile audio installer and have them troubleshoot your problem. Hope this helps. Good luck with your 2003 Chevrolet Silverado stereo troubleshooting.

    Reply
  12. I have a 2003 Chevy Silverado and the radio sound would fade in and out (all display functions still worked) and recently it quit working all together as with the chime for door ajar. I purchased a new aftermarket radio and the wiring kit with the new chime and installed it. All functions of my aftermarket radio work and the display on it works but still no sound out of the speakers. Any suggestions? Thank You.

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  13. Ronnie, when splicing in your RCA Line Out Converter, tap your factory rear speaker wires to get a full range audio source. We suggest you invest in some solid wire taps that wont come loose. These wire tap connectors will allow you to tap into wires without cutting and installs in seconds by hand with no crimping or tools required. If you install a line out converter, your rear speakers will still work properly. If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 204 Chevrolet Silverado amplifier installation.

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  14. I have a 2003 chevy silverado with bose and onstar. I want to use the oem radio and I purchased the adapter to plug in my left and right audio from the amp but i am confused on which wires i need to hook up the wires to. The instructions say I need right and left output. What wires are those? Thanks.

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  15. i have a 2004 chevrolet silverado with bose radio i bought used. The am/fm radio work fine. i had xm signal transferred to radio, recieving channels and display but no sound on xm. anyone got an ideas?

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  16. I have a 2006 Silverado Crewcab that I want to install a GM OEM 6 disc changer. Questions… 1) Where can I buy the wiring harness that plugs into my radio? 2) Where was the OEM changer located on my year\model truck?

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