I have a "Service Required" message on my overhead display that cannot be removed with a "pedal dance". After researching this on two different forums there are two similar but different messages. One is the "Service Required" and the other is "Perform Service". Most posts relate "Perform Service" to the CCV and EGR cleaning at around 65,000 miles. My truck currently has 48,000 miles. Does anyone know what the "Service Required" message relate to? My truck shows no codes when I cycle the key, the odometer just continues to show the milage. Thanks in advance for any info. I really don't want to take the truck in if it's something simple.