I have a 2009 cc 4x4. My trans will not shift out of 4th when cold or drive for a certain speed for a certain amount of time and stop and start rolling again, is this normal. Im only running 275's. It is pretty damn annoying and kills my mpg's. Im right at about 27,000 miles. Time for a "dealer" flush or is the TCM having an issue. I also have the 2.94 gear ratio. I have searched and have not found anyone to have the same issue as me.