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Message: <blockquote data-quote="PoManNox" data-source="post: 25945" data-attributes="member: 8300">P050D is a the new "cold start rough idle" code that GM has no idea how to deal with.    They've added it on all their turbo 4cyl engines from 2024 on.   I believe some people over on a Traverse board I frequent are pursuing buy-backs on their 2024-25 Traverses because they can't keep the MIL off because of this code.As far as I know, there's no harm in it at this point.  The major issue IMO is, if you live in a state like NY, you won't pass yearly inspection with the MIL on and GM has yet to figure out what's causing it and how to fix it.</blockquote>