Acid may leak from the battery at the cable connections, resulting in corrosion on the battery cable ends and in the battery tray. A Leaking battery should be replaced and the cables thoroughly cleaned or replaced if necessary.Google+
Car Problem Reports
Chevrolet Tahoe Corrosion on Battery Cable Ends
Chevrolet Tahoe Problem
Visitor, 2001 Chevrolet Tahoe, 98,000 mi
every Tahoe I have ever owned had battery issues, but I did get a larger alternator, larger battery and much better cables solved my problem. my Tahoe was special ordered, got a lot of extras on this model, still use it today, its better than a tank.