Ok, I just recently bought this truck, 2002 escalade which is absolutely great, but have one issue with it. After I have driven the vehicle for about 30 minutes when I go to turn the wheel sharp like in a parking lot to get into a space, the front starts grabbing much like when the old 4 wheel drives were locked into 4 wheel Low. Is this the front hub/bearings since it is after I have driven it a while or with the all-wheel drive system? Any thoughts would be appreciated.

Does no one have any ideas out there are we just supposed to comment on which color is best or is an escalade better than a navigator. Looking for some help on this issue please.