16 XLT, 5.0 4x4.

I was climbing a muddy hill in 4hi and going nowhere. Decided to give 4lo a shot to see if I could get unstuck. The truck indicated on the dash, "Hillside assist not available" and "Check advancetrac." I may have the wordings slightly off, but hopefully the point is the same. Anyways, the error appeared while in 4lo. I saw that error, and was confused, so I put it back in 4hi. I managed to get unstuck, and got back to the pavement switching back to 2wd. The yellow traction control indicator was stuck on the dash, and I noticed cruise control didn't work anymore. I parked the truck, turned it completely off, and restarted the engine. The light is gone, cruise works, and it shifts in and out of 4hi and 4lo just fine. What the heck was that all about? Anyone ever have an experience similar to this?

 

Possible loose ground up near the headlights. Semi-extreme body movement may have caused intermittent continuity disruption(s).

 

Wouldn't be the first time a computer behaved erratic, and then was fine after a reboot.

 

This just happened to me but in 4A. I read there are a number of things that could cause this behavior. 1 being unable to read an ABS sensor due to obstruction. I did the same shut off and on and its gone.

 

Roll Stability Control, Electronic Stability Control, and Traction Control System are all disabled in 4L. Without these I don't think hill descent control works. It was just a regular message telling you that. Nothing wrong. Depending on the sequence of shifting from 4H to 4L on the hill you may have confused the traction control functions a little. It might not be anything more than that. Shutting the truck down and restarting probably cleared the error.

 

He should not have received a warning indicator on the cluster when shifting to 4L. Done this many times no cluster error.

 

That makes the most sense. I'm not worried that there's a problem, it's acting just fine. But man that was weird.