ndbwhunter
WKR
- Joined
- Jun 4, 2014
- Location
- North Dakota
Any GM mechanics in here that could help me with code p0446 (evap vent valve)? When the code first appeared, I did some research and replaced the evap vent canister and solenoid, and re-routed the vent box with 5/8" heater hose to a location above the transmission. I cleared the code on Sunday, and the check engine light came back on today. I checked the code again, and it's the same thing. Do I have to blow out the line between the valve/solenoid and the charcoal canister? Or is it possible that the charcoal canister is bad?