Greetings, I just purchased a 2005 2500HD truck. It has 16,125 miles on it, with only 675 miles this past year, Jan 7, 07 to last week. I have a question regarding the engine lite. It has come on 3 different times during the last 50 miles I have driven it. I have a appointment next Thursday at the dealer for service. My question is it safe to continue to drive the truck or should I wait until it is serviced and checked? Thanks for any response.