Chevrolet Cobalt Service & Repair Manual: Automatic Temperature Control Diagnosis & Testing

Air Conditioning & Heater

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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 Code ...

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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 ...