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Home >> Chevrolet >> 2006 >> Chevy Express G2500, Van Cargo Extended, 6.6 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 6.6L (LLY) - DTC P0016 To DTC P0342 >> DTC P003A >> Circuit/System Verification

Circuit/System Verification

  1. If DTC P0652, P0653, P0698, P0699, P2564, or P2565 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
    2. IMPORTANT: If you cannot duplicate the condition, operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
  2. Always perform the Turbocharger Learn Procedure , then review the DTC information with a scan tool.
  3. With the engine running, increase the engine speed to 1,200 RPM and maintain. With a scan tool, command the turbocharger vane position control solenoid valve ON. The engine pitch and turbocharger whine should change.
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