Tonyrodz
Resident Resident
My 03 does the same exact thing.I had to go to work at 2 AM today and noticed some de-icer had been applied to the road and there was a bit of icy sheen. I looked at my mirror display to check the temp and saw it was 35 degrees, but then it said "Ice" and went back to temp. It did this a few times then stopped and just displayed temp and there was no more ice on the road. I had no idea my Denali had this feature! I assume it used a combo of temp and traction control to diagnose the condition.
Luckily once my service 4wd came on it was the front axle. Replaced it and it was all good.Sounds like one of the symptoms when my transfer case took a shit on me last year. Getting stuck in 4 lo without pushing the button, then throwing the SVC 4WD light and and the traction control turning itself on and off.
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