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Delco Radio Class 2 Data Defines?
Posted: Fri Feb 28, 2025 1:10 pm
by weinerschizel
I have a 2001 Tahoe with the Delco Radio PN 09383075. Have been designing a circuit to do bluetooth audio with factory harness (no modifications just plug into radio harness). I'd like to decode the Class 2 Data so I know when play buttons are pressed and transmit those to a source Bluetooth device. I've got everything else working in the design. Would be great if I also had play controls.
Anybody have a table with Class 2 Data message definitions?
Sorry if this is already posted somewhere, I looked but couldn't find it.
Re: Delco Radio Class 2 Data Defines?
Posted: Sat Mar 01, 2025 4:57 am
by kur4o
I don`t want to disappoint you, but the radio don`t sent or recieve anything on bus, when controls on wheel are used.
They are hardwired based on resistance voltage drop.
Re: Delco Radio Class 2 Data Defines?
Posted: Sat Mar 01, 2025 11:10 am
by Slipknot09
Go to GMTNation, those guys will sort you out
Re: Delco Radio Class 2 Data Defines?
Posted: Wed Mar 05, 2025 4:05 am
by MudDuck514
kur4o wrote: ↑Sat Mar 01, 2025 4:57 am
I don`t want to disappoint you, but the radio don`t sent or recieve anything on bus, when controls on wheel are used.
They are hardwired based on resistance voltage drop.
Hi all;
I THINK that the only class 2 data on the older radios is "Speed Compensated Volume" but I could be wrong.
I do know that my 2001 Grand AM has this feature from the factory, and the pinouts DO show a class 2 connection.
Mike