Question: Where can I find a 2008 GMC Acadia radio wiring diagram? What are the 2008 GMC Acadia radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2008 GMC Acadia or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2008 GMC Acadia radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 2008 GMC Acadia.
In This Guide
2008 GMC Acadia Car Stereo Wiring Diagram
This 2008 GMC Acadia radio wiring chart shows you all the 2008 GMC Acadia stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Red/White |
| Accessory Switched Power Wire (12v+) | The radio harness does not provide a switched power source. Run a wire to the fuse box or ignition switch harness for switched power. |
| Ground Wire | Black/White |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Green |
| Dimmer Wire | Purple/White |
| Antenna Trigger Wire | N/A |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
2008 GMC Acadia Speaker Wiring Guide
This 2008 GMC Acadia speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 2008 GMC Acadia chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| Front Left Speaker Positive Wire (+) | Tan |
| Front Left Speaker Negative Wire (-) | Gray |
| Front Right Speaker Positive Wire (+) | Light Green |
| Front Right Speaker Negative Wire (-) | Dark Green |
| Rear Left Tweeter Positive Wire (+) | N/A |
| Rear Left Tweeter Negative Wire (-) | N/A |
| Rear Right Tweeter Positive Wire (+) | N/A |
| Rear Right Tweeter Negative Wire (-) | N/A |
| Rear Left Speaker Positive Wire (+) | Brown |
| Rear Left Speaker Negative Wire (-) | Yellow |
| Rear Right Speaker Positive Wire (+) | Dark Blue |
| Rear Right Speaker Negative Wire (-) | Light Blue |
| Left Subwoofer Positive Wire (+) | N/A |
| Left Subwoofer Negative Wire (-) | N/A |
| Right Subwoofer Positive Wire (+) | N/A |
| Right Subwoofer Negative Wire (-) | N/A |
2008 GMC Acadia Speaker Sizes and Locations
This 2008 GMC Acadia speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2008 GMC Acadia.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6.5″ Speakers |
| Front Speaker Depth | 4.5″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6.5″ Speakers |
| Rear Speaker Depth | 4″ Depth |
| Rear Speaker Location | N/A |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 2008 GMC Acadia radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
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7 thoughts on “2008 GMC Acadia Radio Wire Harness Diagram”
trying to add two additional speakers to the third row seat(upgraded models have these) need to know if the lesser model will have wires run to this area and if so what colors for the left and right speakers?
I added a GM Nav/Radio to my 2009 Outlook and need to hook up the VSS. Any help out there?
Steve, use the dark green/white wire for the speed sense wire at the brake control module near the driver side of the firewall. Hope this helps. Good luck with your installation.
I am installing a gps stereo in my 08 acadia and was wondering what wires in the factory harness are for ONSTAR. I would like to be able to utilize ONSTAR as an auxillary input. Any info would be appreciated. My new stereo has a dual zone system that allows 2 items to be used @ once. Thanks in advance for any help.
Or is there anyway to install an external speaker for ONSTAR?
Where is the factory amp located in a 2007 gmc acadia?
What color is the 2008 GMC Acadia backup wire?
Eric, the 2008 GMC Acadia backup wire is the light blue wire located at the BCM module under the driver dash. Hope this helps. Good luck with your 2008 GMC Acadia head unit installation.