I have a 2000 silverado 2500 4x4 w/ 6.0L motor. I just got done replacing the drivers side bearing hub assembly because I noticed grease getting slung in my wheel well and a groan while in a turn. The half shaft boots were in tact and when I took out the old assembly I could tell that the grease was indeed coming from the assembly. I took it for a test drive and I still have a groan in a turn, it sounds like it is on the drivers side. Could the half shaft bearings be going out or can I be getting fooled and it's the passenger side. I plan on getting it up on a jack again tomorrow and checking the passenger side by grabbing the top of the tire and push/pull. Thanks