Chevrolet Cobalt Service & Repair Manual: ATC Component Diagnosis & Testing

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 ...

Component Replacement & Adjustment

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Chevrolet Cobalt Service & Repair Manual. Compression Pressure
When inspecting cylinder compression, the engine should be at room temperature, the throttle should be open, the spark plugs removed and the battery at full charge. The lowest reading cylinder should not be less than 70% of the highest and no cylinder reading should be less th ...