I did lots of reading up on this over past few weeks, and I came across many sources saying the LLT doesn't have a low oil level sensor. If it does have a oil level sensor, how come no auto parts sites have a replacement part?
EditToAdd: See also
http://www.camaro5.com/forums/showthread.php?t=265909 From post #25: "But whatever, whine all you want about an oil level gauge, like it or not, you don't have one so you better be checking your oil the old fashioned way....end of story".
The V8's seem to have one, but I'm not going to rely on it after getting burned by my V6.