chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 6058 > < Diagram Information and Instructions|Page 6055
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Information Bus: Initial Inspection and Diagnostic Overview

Diagnostic Starting Point - Data Communications

Begin the system diagnosis with Diagnostic System Check - Vehicle. The Diagnostic System Check - Vehicle will provide the following information:

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The identification of the control modules which are not communicating

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The identification of any stored diagnostic trouble codes (DTCs) and their status  See: Testing and Inspection/Initial Inspection and Diagnostic
Overview/Diagnostic System Check - Vehicle

The use of the Diagnostic System Check - Vehicle will identify the correct procedures to begin vehicle diagnosis. These must be performed before
system DTC or symptom diagnosis.

Initial Inspection and Diagnostic Overview|Page 6058 > < Diagram Information and Instructions|Page 6055