Sounds like there is some error codes going on.
Have you checked for any error codes? If there are errors logged, you could get Holden to clear them...
I had a similar issue that I had a bunch of lights on my dash coming on... took it to Holden, they said it was something not to worry, cleared the codes and I was sweat. Though that was like best case scenario. Hopefully this is it and it's not an ABD module as that's pricey...
Sorry I can't remember more details but it was a while ago.
Good luck