Where is the ecm engine control module on a 1992 Chevy blazer?

The ECM (Engine Control Module) on a 1992 Chevy Blazer is typically located under the hood, near the firewall, often on the passenger's side. However, the exact location can vary slightly depending on the engine and trim level. It's usually a fairly large, rectangular black box with many connectors.

To be sure, I recommend:

* Checking your owner's manual: This is the best resource for the precise location in your specific vehicle.

* Looking at a wiring diagram: A wiring diagram for your year, make, and model will show the ECM location. These can sometimes be found online.

* Consulting a repair manual: A Haynes or Chilton repair manual will have diagrams and detailed instructions.

Don't hesitate to search online for "1992 Chevy Blazer ECM location [engine size]" replacing "[engine size]" with your Blazer's engine displacement (e.g., 4.3L). This should help you find pictures and more precise instructions.