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Home >> Chevrolet >> 2007 >> Impala Police >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.9L - DTC P0420 To DTC P3433 >> DTC P0442 >> Repair Verification

Repair Verification

  1. Turn the nitrogen/smoke valve to nitrogen.
  2. Command the EVAP vent valve closed with a scan tool.
  3. Use the remote switch to activate the J 41413-200  .
  4. Use the remote switch to introduce nitrogen and fill the EVAP system until the floating indicator stabilizes.
  5. Verify the flow meter stable floating indicator position is at or below the red flag.
  6. Clear the DTCs with a scan tool.
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