GM Chime and Data-bus Integration Interface-model:GMCO

I needed this to change radios in my car. It signals as advertised but not as melodically or dependably as original equipment. It returns you to the old days of "tone in dash" signals instead of through the stereo. It also tends to fail to sound if it is called for in rapid succession (10 seconds or so). When installing, bring a strong magnifier as there is no color code printout sheet and the wires are labeled in very small and faint letters. This is the only option and costs least here.

Works as advertised in my 2008 Vette with no issues. For my Nav install I did have to find the VSS wire and splice it in outside of this harness.