Where is the electronic control module located on a 1988 Chevrolet truck?

The location of the Electronic Control Module (ECM) in a 1988 Chevrolet truck varies slightly depending on the specific model (C10, C1500, C2500, etc.) and body style (regular cab, extended cab, etc.). However, it's generally found under the hood, usually near the firewall.

To be certain, you'll need to:

* Consult your owner's manual: This is the best source of information. It should have a diagram showing the location of all major components, including the ECM.

* Look for a large, rectangular, often black box with numerous wiring harnesses connected to it: This is typically how an ECM looks. It's usually secured with bolts.

* Check common areas near the firewall: These are favored locations for the ECM due to proximity to sensors and wiring.

* Use an online parts diagram: Websites specializing in auto parts (like AutoZone, Advance Auto Parts, etc.) often have detailed diagrams for specific 1988 Chevy truck models. Enter your truck's VIN for the most accurate results.

Remember to disconnect the negative battery terminal before attempting any work near the ECM or other electrical components.