Longshot...
 

So i know this may be a long shot but does anyone have a diagram of the instrument cluster pins and wiring? I installed a solstice cluster on my g5 a few months ago but got the wrong year for my car. So maybe repinning the connector might work to correct dic functions.

If anyone has already tried this and wont work thats fine i can look for an 09 cluster later.

Another reason i wanted the wiring diagram is to find the pin that recieves the signal from the ecm for boost. The solstice and saturn sky have a boost gauge option in the dic and i would like to hook up maybe a sensor from an electronic boost gauge to display boost on it. Maybe this isnt possible but im willing to try. I have a 2.2 so the boost option will not display anything. I think it should work on the lsj though