I am new to the site and found some great info.
I have a 2000 Jimmy and have had the same problem popping. I replaced both hub assemblies and still popping real bad. Just went today and had everything greased for the second time. I thought maybe the grease had dispersed so much that it needed more. I was considering the ball joints next. Now I will definetly check on the washers.
Has anyone with this problem heard a popping crackling noise at the bottom of the windshield on the drivers side? Did the washers fix this too?
-Thanks Blazer.