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Home › Buick › 2009 › Allure Super › Repair and Diagnosis › Engine Performance › System › Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449 › DTC P0442 › Repair Verification

Repair Verification

  1. Seal the EVAP system and use the flow meter on the J 41413-200  , calibrated to 0.51 mm (0.020 in) to determine that there is no leak in the EVAP system.
  2. Clear DTCs.
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