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2009 G8 GT
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Try taking the belt off and see if the noise goes away, if not its probably the worst of those scenarios.
 

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2009 G8 GT
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Dont forget the AC belt as well, just incase it's coming from there.
 

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Sound familiar ???

If you start to hear this

[ame]

It's all over

That was my wifes L76 at about 12,000 miles after it ate a lifter, then lifter ate block.
 

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Kinda lost pulley bearing, slippage or god forbid timing belt....

That is 100% your water pump impellar eating its way through the housing.

New water pump now.

Or you can wait till it spills its guts all over your engine in the middle of nowhere.

Tip

Get the AC Delco one not the GM one.

Both made by GM but the AC Delco has a plastic impellar whereas the original is metal. Plastic won't fail
 

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Discussion Starter · #9 ·
That is 100% your water pump impellar eating its way through the housing.

New water pump now.

Or you can wait till it spills its guts all over your engine in the middle of nowhere.

Tip

Get the AC Delco one not the GM one.

Both made by GM but the AC Delco has a plastic impellar whereas the original is metal. Plastic won't fail
Thanks a lot. Would’ve found it eventually but this is a huge help!
Huge Karma to you!!
 

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Drop the main belt off by moving the tension pulley with a socket and lifting it off. If you haven't a book, draw a diagram of where the belt goes around the pulleys first so you can put it back on. That eliminates any other engine malfunction down to pulleys, aircon, power steering, water pump.

Start and run, It doesn't need belts for that short time. The noise should have stopped.

Never heard of a timing chain problem on a V8. That's V6 stuff so forget that.

It's not that lifter noise from the other post.

That squeak is definitely the tell tale sign.


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2009 GT, Black
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Nope, they stopped shipping the G8 at the end of 2009 and Holden closed its doors soon after..
 

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Nope, they stopped shipping the G8 at the end of 2009 and Holden closed its doors soon after..
Holden closed 2017ish. Aussiev8 know the day/minute /second.
 

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I stand corrected. ..smiles..
 

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Thanks for the steps brother. Are they still making the V6 and V8 down south.
its a collector car here in the US
The last VF Commodore vehicle to be manufactured in Australia - rolled off the line at the Elizabeth plant on 20 October 2017.

Elizabeth, in the state of South Australia was the Commodore/G8 manufacturing plant. The VE and VF Commodore were essentially the same car here as part of the "10 year body shape" but badged differently for the USA. VE was Pontiac G8. VF was Chevy SS

The V6 engine was made at the Engine PLant in Melbourne in the state of Victoria

The Chev V8 engine was imported from the USA in fact I guess Mexico and fitted to Australian Commodores VE/VF and G8/SS and sent back to the USA in a car.

Toyota, Ford and Holden (GM) manufacturing plants left Australia in 2017 when the Australian government refused to subsidise car manufacture that EVERY other country subsidises.

The V8 is rising in price but not a collectors car yet. 500,000+ were made in Australia and most still on the road.
 
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