The vehicle has a battery saver feature designed to protect the vehicle's battery.
When any interior lamp is left on and the ignition is turned off, the battery rundown protection system automatically turns the lamp off after 20 minutes.
This prevents draining of the battery.
Chevrolet Cobalt Service & Repair Manual. Diagnosis & Testing
Accessing Diagnostic Trouble Codes
Connect a suitably programmed
scan tool to Data Link Connector (DLC) and follow manufacturers instructions.
Diagnostic Tests
Low tire pressure in one or more
tires is indicated by a continuously illuminated TPMS indicator after the
...