How do you access ECM on 1994 Buick Regal 3.8?

To access the ECM (Engine Control Module) on a 1994 Buick Regal 3.8, first, disconnect the negative battery terminal to ensure safety. Then, locate the ECM, which is typically found under the dashboard on the driver's side, near the steering column or behind the glove box. You may need to remove some panels or the glove box for better access. Once located, you can unplug the connectors to diagnose or replace the ECM as needed.