VF V6 Evoke. Fault codes x2 and rough idle every 30 seconds or so

Excellent. Great news.
My car shuddered just once this morning, almost felt like a misfire at idle, but then it ran fine. I actually had to check to see if the car was running it was so smooth when I pulled up to the lights. Possibly might take the ECU a while to get used to the purge valve actually functioning as it should.
Cheers!

 

Yep, it's a piece of cake.
Its located drivers side under the engine cover towards the back. One clip and a 10mm bolt.
Seriously, it's a 5 minute job. Took me longer to remove the engine cover and the rear dust/heat cover. Just ring bursons or repco (forget Holden) and order the evap purge valve solenoid for your model. The original valve had a superseded part number. But they'll know what they are looking for.
Here is a pic of what it looks like and where it is located.

 

Just a quick tip. Remove yours, and if you can blow through it, it's knackered.
I have seen videos of people spraying wd40 into theirs to get them unstuck, so you could try that if you wanted. I just replaced it as I want full reliability on this vehicle.
I used to do it on my FPV F6 years ago, it was setup much differently but it used to work and would free it up.