2004 model with factory AM/FM/CAS/CD player. When I start the truck and/or turn on the radio the display will show the radio station numbers. It will not change over to the clock reading on its own. I have to push the clock button to make it change over to the clock numbers. Is there a way to make it show the clock when you start the truck and/or turn the radio on instead the station numbers. I have read the owner manual and did a search, but I cannot find the answer.