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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (5 Of 5)) >> Diagnostic Information and Procedures >> Charge Air Cooler Diagnosis >> Smoke Test Application

Smoke Test Application

WARNING: This page is about a different variant/trim than selected.
  1. Ignition Off.
  2. Place the air filter in a disposable plastic bag and secure it in the air cleaner housing to help prevent smoke leakage.
  3. Remove a B193 Charge Air Cooler Temperature Sensor, refer to Charge Air Cooler Air Temperature Sensor Replacement .
  4. Connect the GE 41413-A  hose to the GE 41413-311  .
    5. NOTE:

    Wrap the GE 41413-311  with a layer of electrical tape to protect the threads in the inlet/outlet duct.

  5. Insert the GE 41413-311  into the Charge Air Cooler (CAC) temperature sensor mounting boss on the CAC inlet or outlet duct.
  6. Apply smoke continuously with the GE 41413-A  while moving all duct work, pipes, and tubes.
    7. NOTE:

    To improve the visibility of the smoke exiting the engine, illuminate the suspected leak area with the GE 41413-SPT  and observe the area from different angles.

  7. Verify smoke is not visible at the components listed below:
    • Mass air flow sensor
    • Air cleaner outlet duct
    • Turbocharger air inlet adapter
    • Crankcase depression regulator valve
    • Intake manifold and gaskets
    • Charge Air Cooler Hoses/Pipes/Tubes
    • If smoke is visible 

      Repair or replace the affected gasket, seal or component as necessary and repeat steps 6 and 7.

    • Go to next step: If smoke is not visible 
  8. Refer to Component/System Leak Test  and perform the Charge Air Cooler Diagnosis (Induction System Air Leak Test).
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