4wd noise

[NewBTahoe]

Hey guys, I'm new to the Tahoe community and was doing some searching around on this forum. A lot of good helpful answers. I couldn't find anything relating to my issue though. I just bought a 2005 Tahoe LT 4wd with auto ride. I noticed when I switch to 4wd and drive I hear a noise that sounds similar to a bad wheel bearing. When I go back to 2wd, I don't hear it. Any ideas/suggestions on how to go about figuring it would be great appreciated.

 

[salvie]

same thing in my '03. The same mechanic that's fixing the rusted/corroded fuel lines is looking at diffs. I'll report what he said.

 

[NewBTahoe]

Sounds good. Looking forward to hearing what he says.