Would you mind indulging me with a picture of your radio? I'm not familiar with the 6810. The Base models come with a 6806 and the Limited and SRTs without Nav come with the 6812. The factory Nav in our cars is is a 6811 so you may very well have a variant of that and it's nothing more than finding a Nav radio and switching out the face plate albeit it's most certianly more than just swapping out the faceplate as I made evident in my previous post.

Thanks