No worries cheers to that TazzI, I have been told on my personal post about this issue that you are the man to talk to! I am honestly contemplating just getting a new cluster although i want it to display the original KMS. Do you know if i replace it with another one that you would be able to tell? i have been told that when a cluster is replaced the car will beep when turned on with out any error messages as a sign produced by holden for a non standard cluster. is this correct?
Not sure where you got told that? As the cluster doesnt beep or have problems unless it is no configured properly for the car eg airbags, fuel configs ect. Most of the clusters I come past have the wrong airbag config for the car and give the infamous message "SRS Warning" message on startup, to which the current owner was told.. or claims, that they bought it like that and a scantool picked up nothing.
This is a DIRECT indication that it is the cluster that has incorrect SRS config, as it does not show in any scantool for some reason. And in saying that, its also a indication that it is not the original cluster to the car!
My suggestion to EVERYONE when buying a vy/vz, is to check the SERIAL No that is found in the engineer mode (hold mode+set and turn key to on.. dont have to start car). That 6 digit number should match the last 6 digits of the car... if it does not.. then it is not the original cluster for that car.
So the answer to your question is yes someone can tell if the cluster is the original by the serial number.
Feel free to send me a pm if you'd like to know more.