2009 VE 3.6L beep and two switching off noises from engine bay when turn car off

[Wahoo]

G'day all, just bought my first Commodore and not sure if this noise is normal. It's a 2009 VE Omega 3.6L 45000km. When I switch the car off in the garage and exit the car I can hear a high pitched beep from the engine bay along with a switching off noise (fuel system?) that is repeated twice. Have taken it to the mechanic and as usual I couldn't replicate the noise when the mechanic was there. Any thoughts? Is this normal? Many thanks.

[Mitch089]

Mine also does this, totally normal. I'm not exactly sure what each noise is though. Could be the ECU or something shutting off with the high pitched noise

[glenn l]

i think it has some thing to do with the fly by wire throttle.

[mint]

I don't know about the noise, but I just wanted to say that's the most concise topic heading I have ever read on this forum..

Way to set the standard - first post!!!!

[Wahoo]

Thankyou for your quick replies and for putting my mind at ease. Will be off now to add some new additions to the beast.

[UFO]

I don't know about the noise, but I just wanted to say that's the most concise topic heading I have ever read on this forum..

Way to set the standard - first post!!!!

I thought the same!
Hate thread titles that are "Quick Question" or "Help Needed" .

[Tommo_27]

Mine does it. It is the throttle body and the shutting/switching off noise is the butterfly valve in the throttle body closing. 99% sure thats what it is.

[Impulse SV6]

+1 on the throttle body, mine has done it since new also. a bit more hi-tech than the old vt. lol

Mine does it. It is the throttle body and the shutting/switching off noise is the butterfly valve in the throttle body closing. 99% sure thats what it is.