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Dang onstar comes on twice after starting my car, “...but services are currently not active...” I’m well aware, as i do not subscribe to onstar. Any way to make this stop?

Check engine light code was reading catalytic converter. Shop said they’ve seen more often than not the purge valve causing the code to read that way. Replaced the valve, was good for two days, engine light came back on today and I’m so irritated. 2015 LT Anyone else have this issue?

I literally had this same problem and just got my purge valve replaced which also resolved my check engine issue. Two days later and my check engine light just came back on again.

I’ve got a 2015 Sonic, roughly 66,000 miles and within the last week it has been idling really rough and stops, stop lights, etc. No check engine light on and it runs fine at faster speeds, but it’s really bothering me. Tried Seafoam in the gas tank but that didn’t seem to make any difference...