Mine is at the dealer now. Brought it in for service 4wd and the recalls couple weeks ago. They updated the software and said it would be good. Week later bad snow storm put it in 4 auto and light came back on. So I took it in this past friday and they're waiting for a part. Hopefully it comes in monday. I'm glad I'm not the only one having the problem but disappointed we're having this problem. On a good note I get to drive in the 20 blazer. Probably will be picking one up in a couple of years for the wife.