Buick/Olds: FREEZE PLUGS, water passages, freeze plugs

Question
WHERE ARE THE FREEZE PLUGS ON A 1993 BUICK LASABRE LOCATED?

Answer
To give an exact answer, I would need to know which engine you have. However...
Historically, they are located under the exhaust manifolds, and at the back of the engine block. They are there to remove the "coremakers" sand which is used for casting the water passages in the block.