Yeah, there was just a long thread on this recently where it was determined it was the instrument cluster as well. The telltale sign is that message on the radio it seems, plus doors unlocking and flashers going on.

I wonder if you got an 07 cluster with lower mileage if it would work as well? With an 08, I'd rather not go back to the 05-06 version if this happens to me. Abran did you try an 07-08 cluster with less miles?

 

I have only replaced with new clusters. It was WYrover whio did the used cluster.

 

I was told the clusters up to 09' would work. You just need to let them know which year of cluster you are installing and they can send you the ECU flash to make it work with your vehicle. The only difference I've noticed besides the graphics is that I don't have a green headlights on light anymore as that was added to the 07' style and newer clusters. It adds the clock in the center display when you flash the cluster to the vehicle.