What does p0496 code mean on the chevy traverse?

The Chevy Traverse with an error code P0496 means that there is an issue with the EVAP canister purge valve and there is a high purge flow from the evaporative emission system. There can be many different reasons why this is happening such as a bad PCM, shorts in the wiring harness, faulty vapor canister purge valve that is stuck open, and fuel tank pressure sensor. Some of the symptoms of the issue is rough idle, check engine light on, and difficulty starting. You can test the purge valve by disconnecting the purge hose into the valve itseLFAnd with the engine running put Your finger over the hose. If You feel suction then You will know the valve has failed and is stuck open.