Where is the engine control module located on 2003 Buick Century?

The Engine Control Module (ECM) on a 2003 Buick Century is typically located under the hood, near the firewall, often on the driver's side. However, its exact position can vary slightly depending on the specific engine and options. It's usually a relatively large, rectangular black box with numerous connectors.

To find it definitively, you'd need to:

* Consult your owner's manual: This is the best place to start. The manual will have diagrams showing the location of major components, including the ECM.

* Look for a large black box with wiring harnesses: Systematically search the area near the firewall on the driver's side of the engine compartment.

* Use a repair manual specific to your 2003 Buick Century: A Haynes or Chilton manual will have detailed diagrams and explanations.

Caution: Be aware of hot engine components and use caution when working near the engine compartment.