Mine is back with the colder weather here in NJ this week. Hasn’t done it since March/April and I daily drive mine. Still only within the first minute or 2 of driving on the 1-2 shift first thing in the morning. I do let my truck warm up for about 10-15 min before I drive when it’s cold out. I figured someone would have figured it out by now. I’m positive it’s cold weather related and that about all I know.