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Diagnostic Starting Point-Automatic Transmission: Symptoms

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

When it has been determined through DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS that no DTCs are present, begin symptom diagnosis by reviewing the Transmission Component And System Description   .  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 Symptoms-Automatic Transmission   .  Symptoms-Automatic Transmission provides common diagnostic categories which relate directly to diagnostic information or procedures.

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