Gord83

I have put around 10,000 miles on my Blazer with no issues. Had to use 4 wheel drive to get to work due to a snow storm here in CT. My CEL came on for the first time, and now is blinking intermittently. The idle is also rough. I realize there could be many reasons, but wondered if anyone had this issue do to the cold weather. Over the weekend and today the temperature is around 10 degrees F. The transmission also seems to be slipping, even though the fluid and filter were changed right after I bought the car.
Any opinions are welcome.
Thanks