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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1393 (Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L (1 Of 5)) >> Diagnostic Information and Procedures >> Diagnostic Starting Point - Engine Mechanical

Diagnostic Starting Point - Engine Mechanical

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Begin the system diagnosis by reviewing the Disassembled Views , Engine Content Specifications , Engine Component Description , Lubrication Description (RPO LY2)  or Lubrication Description (RPO LH6/LMG/LY5/LC9)  or Lubrication Description (RPO LY6/L9H)  or Lubrication Description (RPO L76) , Camshaft Position Actuator and Solenoid Valve Description , and Cylinder Deactivation (Active Fuel Management) System Description . Reviewing the description and operation information helps you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information also helps you determine if the condition described by the customer is normal operation. Refer to Symptoms - Engine Mechanical  in order to identify the correct procedure for diagnosing the system and where the procedure is located.

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