Data Link Connector (DLC)
WARNING: This page is about a different car, the 2005 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The data link connector (DLC) is a 16-pin connector that provides the technician a means of accessing communication data for aid in the diagnosis. This connector allows the technician to use a scan tool in order to monitor the various parameters, and display the DTC information. The DLC is located inside of the drivers compartment, underneath the dash.