One problem related to power train driveline has been reported for the 2004 Chevrolet Suburban. The most recently reported issues are listed below.
I drive a 2004 Chevrolet Suburban z71. When I am driving down the road the transfer case shifts into neutral. I didn't touch the transfer case controls or anything it just goes into neutral. It works just fine in auto 4wd, 4hi, and 4lo. This only occurs while driving in 2hi. I haven't gotten anything fixed yet because electronically it appears that everything is working normally. The mechanic said that he would have to take apart my transfer case and I cant afford it. I was wondering if this was some kind of manufacturer defect or something because it doesn't do this all the time. The problem occurs intermittently. I have never driven this vehicle off-road or have had to use the 4wd for anything. It just seems odd because this vehicle doesn't even have 70000 miles on it. I would think that something like a transfercase would be built to last a little while longer. It hasn't caused an accident yet but has come close a couple of times like when it fails in the middle of an intersection.