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post #1 of 6 (permalink) Old 08-07-2013, 05:53 PM Thread Starter
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Upgrade Stock Radio to XM-07.

I know there are a few posts on this already, but sort of got lost in them so any help pertaining to this would help. Stock unit-works fine, car is a basic transportation and will be for years. I found xm tuners for 50 on ebay. I need to find the wire harness from the radio to the xm tuner above the trunk and an antenna assy. That appears to be all.
I figure the dealer would charge an hour to program it. Seems to be a straightforward install. I haven't found any place that would sell the harness unless it's prewired in all the cars. Not sure. Any help would be appreciated.
I know I could buy an xm unit, but i'm not interested in taking it out and hiding it every time i park the car.
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post #2 of 6 (permalink) Old 08-11-2013, 08:33 AM
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I'm working on the very same project. I bought a new un-programmed xm unit on eBay (make sure you don't get one already used, I've heard it's a pain/impossible to get it reprogrammed) and a wiring harness end to connect to the xm unit. You will need an xm antenna to connect to it..again eBay is your friend. I haven't ran the wires from that new plug to the existing plug on my head unit yet but from everything I've found online that should be the last piece of the puzzle. I will attempt to attach pictures of the wiring harness and the pin out.

-Chuck

---------- Post added at 10:54 AM ---------- Previous post was at 10:42 AM ----------




---------- Post added at 11:33 AM ---------- Previous post was at 10:54 AM ----------

https://www.evernote.com/shard/s242/...ccf939e19bafcb

https://www.evernote.com/shard/s242/...4e2c00034ba1f5
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post #3 of 6 (permalink) Old 08-14-2013, 03:18 PM
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So I tried patching in to the existing harness and that was a bust. So I ordered another reverse harness (same as the picture I originally posted) which came today. I'm going to attempt to connect everything up and pray to the 'balt gods that it finally works.

-Chuck
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post #4 of 6 (permalink) Old 08-18-2013, 10:20 AM
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Well according the the Chevy Dealership, I'm missing the VCIM part that is needed to connect the U2K module to the radio. It's expensive and then requires more wiring. So I'm probably going to either check some junkyards or put this project away and go a different route. If you have that module in your car then I don't see why the way I've gone thus far wouldn't work for you.

-Chuck
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post #5 of 6 (permalink) Old 08-30-2013, 04:55 PM Thread Starter
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Chuck,
you don't need the VCIM unless you have an ONSTAR system.
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post #6 of 6 (permalink) Old 09-07-2013, 05:41 AM
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Well that's what I thought but when I took the car to Chevy to have the radio reprogrammed they said it wasn't seeing the xm module at all and that it needed the vcim so you could get into the Digital Radio Receiver Setup to tell it one was there. Now I had two different schematics that disagreed with that but since it wasn't showing up on their tech2 I assumed my car required that.

Chuck

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