Another new guy, thats me. I own a 2003 Chevy Silverado, that I have owned from day one. Love the truck and never had ANY major issues. Driving to work this morning my "Service 4 wheel drive" message came on. Have not used 4 Wheel drive in over 3 months (haven't had the time). The truck is driving fine and is not making any noise. The light came on for about 5 minutes and then shut off. When I got to work I shut the truck off and then turned it back on and the message did not come back on. I have 130,000 miles on the truck. But as mentioned have never had any problems with it. The truck is never really taken off road, but I do try and use the 4 wheel drive every once in a while to keep fluids fresh. Whoops Guess I should ask the question, does anyone have any suggestions on this?