hi i have an 03 silverado with the 5.3 v8...every morning when it gets cold i start it up, and it idles to the point where it wants to die...as a matter of fact this morning it was around 10 degrees out...after around 5 minutes of being on, it died....another issue is that the CEL turns on as well on when its cold...some times it blinks others it will just stay on...by the way the truck runs perfectly...this is my only issue....please any help would be great