DAB retro fit for cars with the cd500 and 600

[Jpbroad1970]

Hi guys, I'm looking to upgrade the factory installed DAB to DAB+, if possible.
I have DVD800 (I understand this doesn't exist in the UK but I hope it will be the same) with factory DAB installed. But in Belgium we don't have a lot of radio stations transmitting on DAB, they all moved on to DAB+. I also found out that you guys in the UK don't use DAB+ but still hope you can help me.

I don't know a lot about DAB and the head units, and I just can't figure it out on my own.

Is it possible to change out my DAB module for an DAB+ one and if so which one, what kind?

if I believe correctly you can fit it but you will need to get a vci from gm about £35.00 I think but not sure on price