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2003 CTS
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25 Posts
Discussion Starter #1
Overall I've done a few hours of searching and do not know where to begin. I'm sure some folks, somewhere, have the answers, but perhaps cannot, or will not share.

I'm looking to replace my Bose head unit. I have the adapter to maintain chimes, etc.

I want to connect to the appropriate data bus to capture and display the typical Driver Information Center (DIC) messages. I know typical sniffing is quite involved.

Looking to monitor for, and display 'Trunk open', 'Traction engaged', 'Washer fluid low', and other DIC stuff. I do not need DTC type stuff. I do not want to send messages.

My current thinking is:

a) given there is both a standalone display option and the Bose option, could these messages actually be more simple than the typical. That is, one simple type code with textual (well, in HEX) data? That would eliminate putting more extensive database type stuff into these units. But of course, I could be totally wacked on that.

b) is there any info anyone can share on the appropriate bus/protocol and codes that would help in capturing these messages?

If anyone has info or links to share on this subject, please let me know. I cannot see why this would be exceptionally secretive. I don't think it affects the operation of major systems.
 

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2013 Black Diamond CTS4 Premium Coupe (sold-09 CTS4 DI Black Raven/Ebony)
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4,338 Posts
You are in the wrong forum, and not likely to get many responses. Might want to have a moderator move this to the first gen forums.
 

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2008 CTS4 3.6 LY7
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236 Posts
There is a way but it'll be a pain. It involves cutting the factory radio up to fit the aftermarket in place. Plus you have to run new wires to the aftermarket radio since the connectors have to remain in the factory unit. There is a write up in the first gen Forums.
 
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