EVAP System Leak and DTC P0442 or DTC P0455 - kw 3.4 cap driveability fuel GMT191 MIL seat top vacuum

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

MIL on with EVAP system DTC P0442 small leak or P0455 large leak detected.

Inspect rubber flap or deflector at the top of fuel filler neck possibly causing fuel cap not to seat fully. Reposition deflector and retest EVAP system.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(05 Chevrolet Equinox))

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