My car stalls every morning when the temperature drops below 40 degrees.?

mr. b.

New member
I have a 2002 Chevy Trailblazer with 160k. Every morning for the past 2 years when the temp drops below 40 degrees it stalls and the reduced engine power light comes on along with the check engine light. I have to let the engine run for at least 15 minutes before I take off or my car will stall out. What could be causing this?
 
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