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Diagnostic Starting Point - Automatic Transmission: Symptoms

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When it has been determined through DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS in Engine Controls - 4.8L, 5.3L and 6.0L that no DTCs are present, begin symptom diagnosis by reviewing the TRANSMISSION COMPONENT AND SYSTEM DESCRIPTION  . Reviewing the TRANSMISSION COMPONENT AND SYSTEM DESCRIPTION  information enables you to understand the operation of the system. This helps you determine if the condition described by the customer is normal or if a malfunction exists. If it is determined that a malfunction exists, identify the concern by referring to the Automatic Transmission Table  table. The table provides common diagnostic categories which relate directly to diagnostic information or procedures.

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