Things added to the outside of the vehicle can affect the airflow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer/retailer before adding equipment to the outside of the vehicle.
Chevrolet Cobalt Service & Repair Manual. Passkey Module
On models equipped with the Passkey
Theft Deterrent System, a new password must be learned by the PCM when the
BCM/PCM has been replaced. When the PCM is replaced, the EEPROM calibration
is flashed into the new PCM. Refer to latest GM Techline or equivalent information
for PCM ...