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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System & Fuel System - 6.6L (LLY) - Introduction (2 Of 2)) >> Repair Instructions >> Turbocharger Learn >> Learn Procedure

Learn Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Once the enable conditions have been met the throttle must remain at idle. Do not change the accelerator pedal position (APP) during this procedure.
  1. The following conditions must be met for the ECM to perform the turbocharger learn procedure:
    • The A/C is OFF.
    • The vehicle is in Park or Neutral.
    • Start and idle the engine.
    • The engine coolant temperature (ECT) is greater than 40°C (104°F).
  2. After the enable conditions have been met and the engine idle is stabilized, enter the TC Learn Output function from the Module Setup Menu. Command the TC Learn ON for at least 5 seconds, then command it OFF. The system should have learned the new turbocharger position. The TC Learned parameter should have toggled from No to Yes.
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