Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Hello Paul. My name is Gary.Welcome to JustAnswer.
I have done this many many times on Captiva.
No they do not have a drain plug.
If you run the car, you will need to change the fuel filter as well.
The tank is accessed under the back seat.
The primary and secondary fuel senders need to come out to suck all the fuel out.
If too hard for you, then get the car towed to a Holden dealer.
Do you need any further help?
I hope my advice has been of assistance to you.