got the code scanned and got 0446, PCm has determined that a malfunction exists in the electrial curcuit for the vent control in the evaporative emission control system.
So what could be the cause of this and some troubleshooting steps?
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got the code scanned and got 0446, PCm has determined that a malfunction exists in the electrial curcuit for the vent control in the evaporative emission control system.
So what could be the cause of this and some troubleshooting steps?
Sounds like maybe you have two wires plugged into the PCM to possibly control the electric fans when the PCM can only control the one lead and the other was supposed to go to the climate control door. Maybe?
That's a EVAP vent system performance DTC that is purely emissions. You have a clogged vent valve and canister. You need both as well as the updated filter and relocation kit. Your username says it all....under vehicle dirt, mud, debris, and mostly DUST clogs up the stupid EPA crap on these trucks but the updated kit should keep you clean.
BTW.....not sure where you got the description of the DTC....but there are other DTC's that are associated with an electrical malfunction (as this is a mechanical malfunction) than P0446. If it's a hand held tuner or info from AutoZone, I'll sleep better tonight.
P0446 is set when the EVAP is not able to vent quickly enough.
yeah i got the code scanned at auto zone, but do you have a link to where i could get this parts?
A simple Google search does wonders... GM DTC P0446 GearChatter.com :: View topic - DTC P0446
The updated service parts are available at your local GM dealer.