On my avalanche, my check engine light intermittently does not come on with koeo, its always off with engine cranking. I have no codes, no drive ability concerns.

I had a customers 03 escalade doing the same thing but that had other issues as well, and we replaced their pcm and their engine light worked fine after that

Obd2 vehicles should show light on with koeo, and light out during cranking to show that it has a ckp signal.

I was just wondering if anyone else noticed this or experienced this, like I said I have zero issues other than the light.

Thanks in advance