I have found 1 engine coolant drain plug. Is there another one like on my LS?

 

There's only one block drain near the right rear of the block. Since this is a in-line 6, only one drain is needed since all the cylinders are in a common bank, if you will. Your LS has two because the "V" engine has two banks of cylinders.

 

Got it! I've heard it was a "bear" to get to, but it is really easy with a 6" extension, socket and ratchet. Thanks!

 

I found it easier to get at if you remove the fresh air intake tube (just two clamps) temporarily, which allows for a bit more swing on the wrench and much better visibility.