Why does my 2003 Chevy Trailblazer putter in cold mornings?

I have had my Trailblazer since May of 2011. It started fine till one cold morning in December. When I started it, it was puttering, I could not accelerate well. My check engine & reduced engine yellow light came on. Aften running for five minutes, I will turn it off and start it again and the puttering stop and had normal accelaration. The reduce engine power light would come off followed by the check enging light. The next cold morning it would do the same thing again.