Let's take a look at the OBD2 port location on various Chevrolet Vehicles.
Location of OBD-2 port on Chevrolet Malibu.
Location of OBD-II port on Chevrolet truck
Location of OBD-II port on Chevrolet car
On-Board Diagnostic (OBD-II) port on Chevy vehicles (such as Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche, and other models 1996 to present) is located under the dashboard on the driver side.
You can use this port to read and clear fault codes from various control modules, including the Engine Control Unit, with an OBD2 scanner.