I was emailing all techsupports to try and find a harness that will eliminate all of the headaches installing an aftermarket HU in our newer bonnevilles! And finally I have an answer! The Scosche company made a harness called the GMO7B which some of you heard of and used however many mods have had to be made to receive power to the HU! Now they have a brand new harness (IT ABOUT TIME) called the dcGM14B that is not even in stores yet or updated on any sites including their own. Now i have not tried this harness YET im going to order it soon! The main reason being (R U READY FOR THIS!?!) it cost $119.95!!!! So, im letting everyone know in case you can afford to purchase it now, but like i meantioned i am going to buy myself so for all who would rather wait and see if it works first, i will post a result upon installation!
Anyone wanting to follow up on my research www.scosche.com
tech support 800-363-4490 ext.3 (ask about dcgm14b wire harness)

that is great news!

however, i would never spend 120 bucks to hook a head unit up in my car..

i know, i agree but i guess im doing it for the good of the bonneville community! Plus, i know in the future when its on the market, it wont cost that much cause like you said no one will buy it, i know it is that price now cause it is not marketable yet (the guy from techsupport had to transfer me to sales to find out the price cause he didnt know yet and when i talked to sales they asked if i was a dealer cause that is the only ones purchasing these at this time) and you know the general public wont spend that much, thats the price of average HUs nowadays!!

It is a high price, however it'* bound to come down when the demand shoots up.

I'm confused as to why this is a big deal. Metra/Axxess has offered this solution for quite some time now. Scosche'* interfaces are actually Peripheral Electronics' unit with their own sticker on it.

(Edit) The only thing that this unit could possibly do over the existing pieces is integrate with the Class-2 controlled Bose and Monsoon amps. If this unit does this then its worth the $120 price tag, otherwise Metra'* piece can be had for around 70-80. Non premium sound equiped cars wouldn't need the addition.

good point, i didnt even consider the monsoon/bose interface...

the metra/axxess unit only applies to bvilles upto 99! 2000 and up need a RIBBON HARNESS, not a pin style harness, example the gm07b which can be viewed at

http://www.cardomain.com/item/SCOGM07B

however as i meantioned b4 this does not work, you would need to find an alternate 12v source

well, it DOES WORK, you just have to find a 12+ power wire to run to the radio... Im interested as to the scoche solution to the power hook up

I make my living as a mobile electronics installer. I use the Axxess GMOS05 piece in my 05 GXP. It does everything sans amp integration including On-Star retention and RAP 12v output. To bypass the amp I used a Metra 70-2056 harness, the main obsticale in that is the Monsoon amp crosses over the audio, so exteral cross-overs are required.

I also used both the Axxess GMOS05 and the Metra 70-2056 (I took the wires from that and bypassed the factory amp right to my aftermarket amp was easier than running all of the wires to the back of my radio) I got my GMOS05 for about $50 and the metra for a bit less than that off of ebay. They work great except for the occasional time that the dang door chime sticks on and I have to take the key out and restart the car to get it to stop