Hummer H2 A/V install w/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=22676
Printed Date: May 14, 2025 at 8:06 AM

Topic: Hummer H2 A/V install w/Onstar

Posted By: ultimate1502
Subject: Hummer H2 A/V install w/Onstar
Date Posted: December 10, 2003 at 7:27 PM

I have a customer wanting to do some mobile video, multiple amps, components, subs, the works. What is the BEST way to keep his Onstar intact? I know we have to relocate the factory radio and add a small speaker up front. Anybody have tricks, tips? Thanks

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ultimate electronics #1502
oak park, ks

Replies:

Posted By: MAXST
Date Posted: December 10, 2003 at 7:54 PM

Intagrate into the factory system. there are adabters to do this. I just dunno what tho.

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I need quality equipment, feel free to donate.

Posted By: mark241
Date Posted: December 14, 2003 at 9:31 AM

I think there are kits from Metra or Sosche so that you can keep the origional head unit in the vehicle (relocate it) or there is another kit to just get rid of it all together while keeping onstar

Posted By: HamiltonAudio
Date Posted: December 16, 2003 at 8:37 PM

why not use quality line out convertors and use the factory head and save the headaches?

Posted By: 53389
Date Posted: December 17, 2003 at 12:13 AM

Here is your answer!

You can either use the "OS-2" or the "OS-2BOSE"

With this you dont have to keep or hide the factory radio to be able to have "On Star"

But you will have to add an extra speaker under the dash for the "On Star", ex. cellphone handsfree speaker

When "On Star" kicks in, it will turn off the aftermarket sound system, and the extra hidden speaker will turn on

I have installed many full systems in the new Hummer H2 and have been able to keep "On Star"

If you need any help you can call me at 805 379-3325, ask for Nat

Here is the link: https://www.pac-audio.com/products/onstar.htm

Posted By: 53389
Date Posted: December 17, 2003 at 12:15 AM

You don't have to keep the factory radio

You can remove it completely

Good Luck!

Posted By: richs
Date Posted: January 18, 2004 at 4:47 PM

SoundGate also has interfaces for replacing the radio in H2's and keeping OnStar

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Best Regards,
Rich

Posted By: customsuburb
Date Posted: January 18, 2004 at 5:50 PM

This adator from PAC will help you with your problem. https://www.crutchfield.com/cgi-bin/S-jHpEoNpvS4l/ProdView.asp?s=0&c=11&g=751&I=127OS1&o=m&a=0&cc=01&avf=N This link takes you to the PAC OS-1 page on crutchfield.com

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