Where is the slot for the code key on a 1987 Chevy Celebrity?

Hello ! If you mean the service connector ALCL on Chevrolet celebrity is located under the steering wheel, next to the fuse compartment. If you are on the drivers seat it is between your knees. Terminal A and B are the first 2 from the upper right of the connector. If you join this 2 terminals with a jumper wire the computer will show you the codes stored on the CHECK ENGINE Light, so watch it. |------------------------| |o o o o o o o o o o B A | |o o o o o o o o o o o o | |------------------------|