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Home >> Chevrolet >> 2007 >> Optra5 LS, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.0L (L34 GMDAT) >> Diagnostic Information and Procedures >> Diagnostic Starting Point - Engine Mechanical

Diagnostic Starting Point - Engine Mechanical

Begin the system diagnosis by reviewing Engine Component Description . Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exist. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Engine Mechanical  in order to identify the correct procedure for diagnosing the system and where the procedure is located.