The driver's storage compartment is located near the left side of the steering column on the bottom of the instrument panel. Pull the cover down to open.
Chevrolet Cobalt Owners Manual. Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System
(TPMS). The TPMS is designed to warn the driver when
a low tire pressure condition exists. If your vehicle has
this feature, TPMS sensors are mounted onto each tire
and wheel assembly, excluding the spare tire and wheel
assembly, if the veh ...