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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 P0401 To DTC P268A >> DTC P2563 >> Circuit/System Verification

Circuit/System Verification

  1. If DTC P0698, P0699, P2564, P2565 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further information.
    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. With the engine running, command the TC vane position sensor with a scan tool in 5 percent increments, from 0-100 percent. Observe that the TC Vane Position Sensor parameter and the Desired TC Vane Position parameter remain near the commanded TC vane position.
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