I stopped in to Jay Chevrolet dealership last week because my Service 4WD light came on. I tried turning of the vehicle and then turning it back on but the light was still on. The service technician got in the vehicle turned it on and the light was off. He said I should still bring it in and have them check it out - which I did today. I got there at 7:30 (no appointment) and I was driving out before 8:30. They had to replace something (not sure what). Of course it was covered under warranty since I only have 26,000 miles on the truck. By the way, they washed it for me too - and it needed it!
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