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I just want to know how to install a new stereo in my cobalt 07, i called an audio shop for a wiring harness and he said its 300.00 dollars cuz of the bose and onstar, can u install the stereo without a harness and have the old stereo in the trunk?
 

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Cobalts come with Bose?
They SHOULD come with pioneer system with the factory subwoofer in the trunk on most of the LTZ and stanard on SS models

and $300? screw that!
Metra GM OnStar® Interface General Motors OnStar® data bus interface (Model GMOS-LAN-04) Retains OnStar, factory door chime, and factory amplifier at Crutchfield.com
^^^Thats what you need if you want to keep your onstar and door chimes.^^^

Or you can just wire them yourself but you'll lose the onstar and door chimes...
i think i still have the wiring layout for our '07 radios.
 

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well i dont have onstar or the upgrded radio model but i used the 06 saturn ion harness on my 07 ls and it works great but you loose your turn signal sound and door chimes..i figured i didnt need it anyways so went ahead with the install.
 

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how do you lose those aren't the turn signals from a relay?

Snake890217 added 1 Minutes and 16 Seconds later...

p.s. I have an after market stereo it just came with an adapter we had to splice on. maybe thats why i didn't lose mine, but i still don't get why you would.
 

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Cause the "clicks" and "dings" are sent through the Stereo speakers, they're at a set volume, and can be drowned out. however, when you remove the stereo, the sounds are lost because they are sent through the GMLAN to the radio.
 
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