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P0442 Diagnostic Trouble Code Discussion for February 2008

EVAP System Small Leak Detected

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Trouble Ticket Help Requests for DTC P0442
Help Request Posted
2002 GMC Envoy SLE 4.2L MIL Lamp on VIN: 1GKDT13SX2
P0442: EVAP System Small Leak Detected. Got a real strange one here I am hoping some of you may have seen before. This car has a leak somewhere in the evap system that will leak under vacuum, but not pressure. We have smoked to no avail and found nothing, replaced both the evap and vent solenoids ...
February 07, 2008