Just an update, got the recall for PS done last Friday and asked them to look at the seat base and provided the holden bulletin number. Received a call around lunch time that the car would be ready to pick up a bit later in the afternoon as they had to order a part for the driver seat base which will arrive around 2:30, so the car would be ready by around 4.
Got a call 2:30, seat base fixed along with the recall. Picked up the car, didn't get asked to pay anything. Seat base click now gone, although I have only driven the car from dealership to home and haven't driven since then, but that itself was a decent drive(~15km).
I would suggest people who have problem with the seat base, give the dealership holden bulletin number and get it sorted, shouldn't have to pay as it is a warranty issue.