Help!! 2000 Siverado 4X4 Ticking Sound From Driver Side Front

[tcr1016]

I have a 2000 Chevy Silverado 1500 4X4 with 160k on it.

I had the tranny filter changed at the chevy dealer, and now I have a ticking sound. It is coming from the drivers side front wheel. Sounds like a zip tie in a bicycle spoke. I can hear it well in the cab. I looked all around the wheel and don't see anything lose.

The dealer says I need the transfer case rebuilt, but it does not leak. Aamco says it is the front dif and the bearings went out.

Has anyone had this problem? Both are wanting $$$$$ thousands to fix it. If you need anymore detail, please ask.

Thanks

[SkierZ71]

Does it have the autotrac case? Could be front drive shaft u joints

[gmtech4]

Sounds like a lot of guessing and no diagnoses . Did anyone take anything apart? I don't think so Tim