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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System & Fuel System - 6.6L (LLY) - DTC P0016 To DTC P0341) >> DTC P0299 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Test the charge air cooler for leaks. Refer to Charge Air Cooler Diagnosis (Charge Air Cooler Air Leak Test) or Charge Air Cooler Diagnosis (Full System Air Leak Test) .
  2. Test the turbocharger oil supply feed. Refer to Turbocharger Lack of Oil Supply .
  3. Inspect the turbocharger oil supply tube for restrictions.
    • If a restriction is found, clean or replace the oil supply tube as necessary.
  4. Inspect the turbocharger for debris, worn impeller and turbine blades, or damage Refer to Turbocharger Cleaning and Inspection .
    • If worn or damaged turbocharger blades or vanes are found, replace the turbocharger assembly.
    • If the charge air cooler system, the turbocharger and oil supply test normal, replace the MAP sensor.
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