How to Reset the ECM on a Chevy Truck
Every Chevrolet truck has an engine control module that manages the electronic components of the engine and monitors sensors for errors. Returning the ECM to its factory state may be necessary to troubleshoot or resolve a number of problems.
Things You'll Need
Wrench or socket set
Instructions
Remove the nut from the negative battery cable using a socket set or wrench. Slide the cable off of the battery and set it aside.
Turn the headlight switch to the "On" position to drain the ECM of any remaining power. Wait at least 10 minutes, then turn it back to the "Off" position.
Replace the negative battery cable by reversing the previous steps. Tighten the nut until it feels secure, paying attention not to overtighten it. The ECM has now been reset.
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