Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
I would check all the fuses in the interior fuse compartment, and the engine compartment.
The fault has probably blown a BCM fuse and hence the no start condition.
There are many fuses for the BCM, each of which has multiple functions.
Unfortunately I cannot access the wiring until Monday, due to system outage.
Here is the interior fuse block.
I have seen this sort of fault which either ends up being the interior fusebox, or the BCM (Body control module) which is behind the radio, A/C controls.
A 2011 Captiva needs GDS2 as the scan tool for a DTC check, which will then reveal where to start.
My advice to you is to take it to a Holden dealer, don't waste money at an auto electrician.
Another little bit of info.
If you car has an electric parkbrake, the module is mounted near the LHR jacking point, some mistake this area and end up damaged the module and/or wiring.
Then there is a no-start condition, because the HSLAN is down.
Hope you can get your car fixed, I can get generally get a answer within 30 min average, but I'm not with you.