Well, I put 'er back together with the new sender that I purchased last week and took it for a drive. Everything seemed fine, so I went up to Auozone and bought a new filter and oil, figuring to give it an oil change today. And now for my next oil related issue...
I just pulled the pan plug to drain it. As I got the plug loose, I started to see drops of water coming out. Now there was not a lot of water in the oil, and its hard to estimate how much, but I'd guess about an ounce, a couple of ounces at the most.
The Tahoe has been sitting outside since mid February, and not run until the last week. I imagine that over that amount of time SOME water would get into the engine from condensation on the daily cycle, and not running the engine to burn it off. But that might also be wishful thinking. If its not that, I'm thinking bad head gasket, cracked head, or cracked block. What easy method can I use to try to determine which of those things is the issue, or, is it possible that its just condensation from the prolonged sitting?
*Edit to add, the oil is not "milk-shaky" and has not been so on the dip[stick as I've been checking it the last few days either.*
Joe