Evap Vent Solenoid on 2006 Isuzu i280 Pickup

I am trying to find out where the evap vent solenoid is on my truck. And I would like to know if this is something that I can fix instead of taking it to a mechanic.
They also replaced blower motor resistor and recommended that I should replace blower motor connector, is this necessary?

Asked by for the 2006 Isuzu i280 Pickup