2005 Chevy Blazer with onstar

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=69971
Printed Date: July 12, 2025 at 3:17 PM

Topic: 2005 Chevy Blazer with onstar

Posted By: domiyork8091
Subject: 2005 Chevy Blazer with onstar
Date Posted: January 03, 2006 at 8:19 PM

Hi,

Did this SUV mentioned above and did not know the customer wanted the onstar working, replaced the radio, it worked fine, now he came back later to tell that onstar does not work. Where can I find an interface that will make this work and also the radio? I got a harness that allow me to keep the original radio hidden in the cargo area.

Thanks.

Replies:

Posted By: geepherder
Date Posted: January 03, 2006 at 10:20 PM

PAC OS2-Bose, I believe. If you want the chimes, that's a seperate piece- I don't remember the model.

-------------
My ex once told me I have a perfect face for radio.

Posted By: domiyork8091
Date Posted: January 04, 2006 at 7:28 AM

Do you know where can I buy this item?

Posted By: gus1
Date Posted: January 04, 2006 at 8:28 PM

Sooo.... why would you relocate the radio in a Blazer?? Last one I had through here wasn't Class 2. They look like a class2 deck, but they aren't.

The Onstar audio and muting is on the harness.... either bring the audio in on an Aux, or use a PAC adaptor for non Class2 Vehicles.

Gus

-------------
Wherever I go, that is where I end up......

Posted By: sparkie
Date Posted: January 05, 2006 at 7:55 AM

The 2005 Blazer/Jimmy are Class II data radios. You can purchase a interface module that will allow chimes and Onstar to work with your new radio. I like ones from Pheripheral as they also give your new radioi a switched source of accessory power. If you choose to use the radio relocate method, you need to run power ground and data to the original radio as well as all the wires in the radio harness 12 pin plug. You will also have to hook up a speaker to one of the factory radio's front speaker outputs to get Onstar audio.

-------------
sparky