Hi all - I have 2005 Tahoe Z71. This week I got a P0446 code, EVAP vent related. In addition, I've had a fuel smell outside the truck, and have been loosing pressure overnight. In another thread, the consensus was that I need to clean out the EVAP valve, as its most likely blocked. So, I got under the truck, and to be honest, I'm not sure what to remove, clean, etc. Here is a diagram of what I'm looking at: I assume #3 is the valve. After removing it, what is the proper way to clean it? Does it come apart? Do I just blow error into the "input" side of the valve? Thanks!