For vehickes with a convenience net, it is located in the rear. Use it to store small loads as far forward as possible. The net should not be used to store heavy loads.
Chevrolet Cobalt Owners Manual. Malfunction Indicator Lamp
A computer system called OBD II (On-Board
Diagnostics-Second Generation) monitors operation
of the fuel, ignition, and emission control systems.
It ensures that emissions are at acceptable levels for
the life of the vehicle, helping to produce a cleaner
environment.
This light should come on ...