Rough idle when starting hot

[Dave Stewart]

My vn v8 idle runs fine when starting cold and also when it warms up but if stopped hot an then restarted it idle rough but

 

[MikeC]

Checked the IAC valve? If you replace it get a genuine GM - AC Delco or Delphi

 

[Nate420]

Hi. I had the same issue and it was the CAS sensor.

 

[MikeC]

There's no CAS sensor on a V8 to my knowledge.

 

[losh1971]

No, no CAS on a V8, V8s have a HES.