After changing the gas cap, I had a smoke machine hooked up to my 2001 GC to troubleshoot a 442 OBD code. I was told by the dealership that I needed a new Evap Valve. I understand that this is a very easy fix, but I don't know where the evap valve is located. Can anyone point me in the right direction?

Thanks.

 

humm Leak detection pump or purge solenoid? what does it look like? one is under the car and one is up top.