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Home >> Chevrolet >> 2009 >> Traverse LS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0192 To DTC P0629 >> DTC P0442 >> Circuit/System Verification
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Circuit/System Verification

  1. Verify the following conditions do not exist in the EVAP system:
    • Loose, incorrect, missing, or damaged fuel fill cap
    • A damaged EVAP purge solenoid
    • Disconnected, incorrectly routed, kinked, or damaged EVAP pipes and hoses
    • A damaged EVAP vent valve or EVAP canister
    • If you find any of the above conditions, repair as necessary.
    2. NOTE: Refer to the J 41413-200  operation manual for detailed instructions. See Special Tools .
  2. Remove the fuel fill cap. Connect the GE-41415-50  to the fuel tank filler neck. Connect the J 41413-200  to the GE-41415-50  . See Special Tools .
  3. Calibrate the J 41413-200  Flow Meter to the correct leak orifice for the vehicle. See Special Tools .
  4. Command the EVAP vent solenoid closed with a scan tool.
    5. NOTE: Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
  5. Activate the J 41413-200  and compare the flow meter's stable floating indicator position to the red flag. See Special Tools . The floating indicator should be below the red flag.
    • If the floating indicator is above the red flag, test for a leak in the EVAP system.
  6. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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