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Scan Tester Usage: Summary

WARNING: This page is about a different car, the 1990 Chevrolet Corsica, 1990 Chevrolet Cavalier, and 1990 Chevrolet Beretta. However, it is still accessible from the selected car via links, so may be relevant.

If no hard fault codes are present, driveability symptoms exist or intermittent codes exist, proceed to H - TESTING W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.), or intermittent diagnostic procedures.

NOTE: The following diagnostic flow charts and mini-schematics are supplied courtesy of General Motors Corp.
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