Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Very Common problem with AH Astra.
The CIM (Column Integration Module) is the busmaster for the car, and is more than likely the culprit.
The is a Holden rework for this concern, and you may still get it under warranty.
My advice to you is take it a Holden dealer with all of your keys.
Personally, I would recommend going to the manufacturer (Opel, Holden dealer) for this concern.
The average "Auto lecky" won't know what to do after verifying the starter motor operation.