I have a 2001 Z71 with the 5.3L V8. I changed my oil for the first time at 2,000 miles with Mobil 1 Full Synthetic. My wife called me today at work and said that the "change oil" message came on the dash. The truck only has about 4,000 miles now. A new AC Delco oil filter was replaced at the same time with the oil. What gives? Is there some kind of reset button I have to push after changing the oil. I haven't looked at the truck yet but I worried as heck now. I hoping there is just some kind of reset button and that the oil is not already dirty after 2,000 miles!?!?