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Self-Diagnostic System Check (Non-CRT TORONADO & TROFEO)

The Self-Diagnostic System Check is an organized approach for identifying problems caused by on-vehicle computer controlled electronics. Understanding this chart and using it correctly will reduce diagnostic time and prevent unnecessary replacement of components. If you have not reviewed the basic information on how to use computer self-diagnostics, go to beginning of this article.

Fig 1: Self-Diagnostic Troubleshooting Diagram (Non-CRT Toronado & Trofeo)
G92I13720Courtesy of GENERAL MOTORS CORP.