This light comes on briefly
when the ignition is turned
on, and the engine is not
running, as a check to
show it is working. Then it
should go out when the
engine is started.
If the light stays on, or comes on while driving, there may be a problem with the electrical charging system.
Have it checked by your dealer/retailer. Driving while this light is on could drain the battery.
If a short distance must be driven with the light on, turn off all accessories, such as the radio and air conditioner.
Chevrolet Cobalt Service & Repair Manual. ATC Diagnosis & Testing
Accessing Diagnostic Trouble Codes
Connect suitably programmed scan
tool to the Data Link Connector (DLC) and follow manufacturer's instructions.
Clearing Diagnostic Trouble Codes
Connect a suitably programmed
scan tool to Data Link Connector (DLC) and follow manufa ...