Any problems with the AWD system?
It seems to need to be rolling to get the awd automatic button to tell all the wheels to rotate. So if you are on Ice and stopped try using 4Hi or 4 Lo I had to replace one of the sealed front bearings a long time ago. I now have 115K miles on this truck and it seems to be as strong as the day I drove it off the showroom floor.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts