factory radio, 2008 gmc sierra

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=123804
Printed Date: May 13, 2025 at 7:04 PM

Topic: factory radio, 2008 gmc sierra

Posted By: nickreyna
Subject: factory radio, 2008 gmc sierra
Date Posted: October 06, 2010 at 12:14 PM

I need the wiring diagram for the factory radio on a 2008 GMC Sierra 4Dr 4x4. Does anyone know it thnks

Replies:

Posted By: i am an idiot
Date Posted: October 06, 2010 at 8:49 PM

What exactly are you trying to do? You can not put that radio into any other vehicle. That vehicle does not have a switched 12 volt wire in the factory harness. If you are planning to put an aftermarket radio into that truck, you really need to purchase the appropriate vehicle specific wiring harness.

Posted By: howie ll
Date Posted: October 12, 2010 at 9:05 AM

Yes and as far as I know, you will lose direction indicator clicks, and back-up aids and On star if present. If you add an aftermarket H/U you will need the relevant adaptor.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

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