I think mine is leaking. How hard is it to get up in there and tighten it up or replace it? I've been trying to chase an oil leak and my front main and rear main aren't leaking enough to cause a leak.. then I noticed the sending unit was pretty wet... I know we have problems with those out of Chevy's at work but I didn't know how hard it would be to get to on ours. Should I wait till my next oil change? It looks like it might be easier with the filter out of the way. Anyway let me know something.. Thanks!