[yukonjack]

Any idea if there is a technical advisory re: the front diff? For those of you having the problem what year (we are 2004)? Did you get the service 4WD message on the DIC or did it just bomb? Ours made noise the first time
(2006) and we had to have our mechanic point out to problem to the dealership (Lund). We had driven from AZ to CA and back just the month before. Lund fixed it outside of the warranty (cost us 100$). This time (one year later 10/2007) the service 4wd message came on just outside of Page, AZ on our way home from UT (SLC). The front diff was low but no noise. Seems long distance driving at a relatively high speed may cause the problem to progress rapidly. Any input greatly appreciated. I plan to talk to GM next week. Wish us luck!