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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (ENGINE CONTROLS - 6.6L - DIAGNOSIS (DTCs P0016-P0401)) >> DTC P0299 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. If DTCs P003A, P0045, P0698, P0699, P2563, 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. Verify the integrity of the air induction and turbocharger pipes and hoses by inspecting for the following conditions:
    • Any damaged components
    • Loose or improper installation
    • Wet or restricted air filter
    • Exhaust leaks before the turbocharger
    • Exhaust restrictions after the turbocharger
    • Charge air cooler leaks, with a Special Tools
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