My truck also does this.
+1 for only occurring from cold up to running temp, after reaching running temp it stops happening.
Can see the RPMs dip when it starts stalling, then pop back up when it goes away.
I have auto start/stop hard disabled. It probably would happen to everyone, but no one knows because everyone elses’ trucks shut off when stopping.
Thought it MIGHT be the canister purge valve for a while. Still reading about it... no clue other than that.
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