Where is the oil drain plug location on a 89 Chevy Celebrity?

The oil drain plug on an 89 Chevy Celebrity is located on the bottom of the oil pan. The oil pan is the flat, somewhat rectangular part underneath the engine. The plug itself is usually a fairly large bolt, often with a slightly hexagonal or square head.

However, without seeing the specific engine (2.5L, 2.8L, or possibly a different engine if modified), I cannot give a more precise location. The exact position might vary slightly depending on the engine. You'll need to get underneath the car to locate it. Be careful and use jack stands for safety. Also, remember to consult your owner's manual for specific instructions and diagrams.