2016 6.0 cold start idle fluctuation

By Chevyfan3
June 25, 2020 in Troubleshooting & Recalls

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Chevyfan3

Posted June 25, 2020

Wondering if anyone else has experienced this, past two weeks my truck in cold start will do the typical run the idle up, come down but then idle back up again. Sometimes it goes up 2-2500rpm, and sometimes it's once sometimes it may fluctuate once it twice. Only on cold start, idle is smooth after that and it drives fine. Now when I drive to work like today it was 70* out and when I will head home it will be there upper 80's so not sure if the truck is just reacting to the temp change maybe? It hasn't done this before though, also I'm at 34,800 miles.

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