The ECM (Engine Control Module) on a 1989 Chevrolet Celebrity wagon with the 2.8L V6 is typically located
under the hood, near the passenger side inner fender well. It's often mounted to the inner fender itself or on a bracket nearby. It's a fairly sizable black box.
However, it's *always* best to consult your vehicle's repair manual for the precise location. The location might vary slightly depending on options or specific trim level. A diagram in the manual will eliminate any guesswork.
