Here are some specific places to look:
* Behind the battery: This is the most common location for the ECM. It's usually attached to the firewall or a metal bracket nearby.
* On the passenger side fender well: Some S10 models have the ECM on the passenger side, close to the fender well.
* Under the dash: In very rare cases, the ECM might be located under the dash, but this is less common.
To confirm the exact location in your specific S10, you can:
* Consult your owner's manual: It should have a diagram showing the location of the ECM.
* Look for a black box with electrical connectors: The ECM is usually a rectangular black box with multiple wiring harnesses.
* Use a wiring diagram: You can find a wiring diagram for your S10 online or at a local auto parts store.
Be careful when working around the ECM, as it's sensitive to electrical shock and damage. If you're not comfortable working with electrical components, it's best to have a qualified mechanic locate and diagnose the ECM.