You can clear the codes on your Chevy Silverado using an OBD scan tool, a hand-held computerized device available at most auto parts retailer. The tool is used to read the codes, and clear them after servicing or repairs. OBD stands for "On-Board Diagnostics." This is the computer that monitors all functions of the vehicle. When there is a malfunction within the Silverado, sensors positioned throughout the vehicle will send a trouble code to the OBD computer.
Step 1 - Locate the data link connector (DLC) port that is the same size and shape as the OBD scan tool's connective end. This port is located on the underside of the driver's side dash next to the steering column.
Step 2 - Plug the handheld scan tool into this port. Put the key into the ignition and turn it to the "II" position, but don't start the engine. This will turn on most scan tools. If not, locate the on/off switch and turn it on.
Step 3 - Wait for the scan tool to retrieve the codes, then press "Erase Codes."
Unplug the scan tool after it has finished erasing the codes. Start the engine and check to make sure all lights have turned off on the instrument cluster.
TIPS: Some auto parts stores will let you borrow their scan tools for free.
THINGS YOU'LL NEED: OBD scan tool, Ignition key
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