SVS WL Caprice 5.7

[Mitchellbrock]

Service vehicles soon comes up certain times without doubt, When car is idling no issues driving it around suburban areas no issues but when sitting at 100 km/h on freeway/highway for a few seconds “service vehicle soon come up” or when stationary and holding rpm above 2000 rpm for a few second it comes on does anyone know anything about this
New
oil pressure switch
Cam sensor
Crank sensor
Oil pump
The car when idling is a slight bit rough but has new plugs, Leeds and just had injector clean and refurbish I wouldn’t call it a miss fire as it idols good but you can feel in the car it shakes slightly then stops car is also bone stock cheers

 

[Drawnnite]

So SVS is a non emissions related fault.
Most scan tools cannot interrogate it (to my knowledge anyway).
Any true way to find it out is to get it on a tech 2.

Often it is the oil pressure switch, but as you have changed that then I am a little unsure.

I'd suggest getting it scanned with a tech 2 (Holden scan tool) and going from there.