Does anyone have the pinouts to the back of the stock radio, and then next model up of the radio?
I have a mod I am considering.

Thanks,
Matt

 

Are you wanting the wire harness pinouts? I can post them but I need to know what radio RPO code you have and what RPO code you want to install.

 

Good Question, let me look it up

 

Are these the codes you were looking for?:
UW5 - 6 SPEAKER SYSTEM
U1C - AM/FM STEREO RADIO/COMPACT DISC ELECTRONICALLY TUNED AM/FM STEREO RADIO W/SEEK,TONE SELECT, COMPACT DISC PLAYER, DIGITAL CLOCK AND 4 SPEAKERS

 

Here are both connectors for the UW5 radio.



Radio C1 (UW5)
Pin-Wire-Color-Circuit No.-Function

1-RD/WH-1140-Battery Positive Voltage

2-GY-8-Instrument Panel Lamp Dimmer Switch Signal

3----Not Used

4-DGN-117-Right Front Speaker Output (-)

5-LGN-200-Right Front Speaker Output (+)

6-GY-118-Left Front Speaker Output (-)

7-TN-201-Left Front Speaker Output (+)

8-BK/WH-651-Ground

9-DGN-5060-Low Speed GMLAN Serial Data (Early Production)

D-GN/WH-5060-Low Speed GMLAN Serial Data (Late Production)

10---- Not Used

11-DBU-1796-Steering Wheel Control Signal (UK3)

12-14----Not Used



Radio C2 (UW5)
Pin-Wire Color-Circuit No.-Function

1-BN/WH 367-Remote Radio Left Audio Signal (+) (U2K)

2-DGN/WH-368-Remote Radio Right Audio Signal (+) (U2K)

3-PK-314-Radio On Signal

4-DBU-46-Right Rear Speaker Output (+)

5-LBU-115-Right Rear Speaker Output (-)

6-BN-199-Left Rear Speaker Output (+)

7-YE-116-Left Rear Speaker Output (-)

8-PK/BK-2062-Cellular Telephone Voice Signal (UE1)

9-TN/WH-372-Audio Common (U2K)

10-13----Not Used

14-WH/BK-644-10 Volt Reference (UK3)

15----Not Used

16-OG/BK-2061-Cellular Telephone Voice Low Reference (UE1)

 

Hmmm
1-BN/WH 367-Remote Radio Left Audio Signal (+) (U2K)

2-DGN/WH-368-Remote Radio Right Audio Signal (+) (U2K)
That sounds like an input to the stereo, I guess the common/ground is the third line... So the base radio does have inputs on the back for another device.
I feel the need to tinker...

 

Oh, drat
And Thank You Very Much

 

Did I miss something? These are probably for onstar, right?

 

U2K is XM radio.

 

Cool, do you know if these can be used to wire in an audio device kept in the top storage bin?