Does anyone know how to fix intermitent stalling when cold on 07 pacifica

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Vehicle has just turned over 100,000 miles. For the past few thousand miles, the vehicle will stall occasionally within the first 5-6 miles. No diagnostic codes are set. First time happened in summer, then it was a couple months in between. Now it happens a couple times per week. Getting more frequent. Data streams appear normal. Only happens when the engine is cold. Once engine warms, it does not occur again. Doesn't matter how much fuel is in vehicle. Seems like it is running out of fuel, yet there is plenty of fuel. If try to start right after it dies, it is very hard to start. If wait for a few minutes, it starts normal.