I have widened my complaints an engine builder said to "just take it to the dealer, jump up and down and say I won't my engine fixed". It's NOT that easy under GM Australia rule.'
For the majority of cases, its simply the selling dealer that is on the hook for any repair/replacement/refund as required under ACL. The only reason a selling dealers bring Holden into the picture is so that they get directly reimbursed for "warranty" work and thus aren't out of pocket. But that requires the dealer to follow Holden rules and in essence it becomes a distraction.
Since it's normally the selling dealer that will be on the hook, that's why an engine builder would say go to the dealer and jump up and down.
But didn't you buy the car from Holden (the manufacturer), so the selling dealer and the manufacturer are one in the same which is more of a rock and hard place situation that would notmally be the case... End result is too much faffing around since Holden just don't give a ****....
So get a loan, get a lawyer, pay to have the engine stripped down and assessed by an expert in the field who is able to testify as to his findings. Then have the engine rebuilt before you take Holden (the seller) to court with your engineering proof and expert witnesses at the ready along with a full accounting of your defect repair costs and any consequential costs to date (including expert examination and whitness costs, car hire costs during repair, loan establishement costs, interest costs, ect)... Some costs are normally not awarded but Holden is being egedious here and they know the process is costly and banking on you going away... Just like Woolworths tried with NSW fuel contamination... and in the woolworths case the fuel testing and legal costs were awarded (which isnt normally the case)...
Then when you win, as i doubt you'd loose if well prepared, you can freely post the truth on all social media platforms about how unlawful holden behaved...