GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default P0446 and EVAP issues.

    Heya, I have a 2005 Chevy 2500HD with the 6.0 Vortec in it. A few days ago, the SES light flipped and spit out the error code P04406 when I scanned it. I have found a few good threads on this forum regarding possible causes and fixes for this code. I would like to try and clean the valve rather than replacing it. I am still a little confused as to the actual location of the vent valve I am looking for. I located a small canister on the read of the gas tank, held on by a sliding clip. After taking this canister off, I removed the solenoid attached to the side of it. This solenoid has 1 hose attachment and 1 electrical connector. I looks like this ( http://imgur.com/xbNkT ). Is this the solenoid for the vent valve that I need to clean, or do I need to follow the outgoing hose farther up and clean something else. Upon following the hose I found that it connects via a quick connector to an unknown black box. This black box also has 2 other hoses coming into it. I was able to remove the hose running from the canister to this box. Do I simply need to stick an air hose in there and clean it out? Or what else is it that I need to do to make that valve operate properly again?

    If you need any additional information from me just let me know.

    Thanks in advance.

  2. #2
    Legend


    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Location
    Piermont,NY, back in Northern NJ now, But may be in IL soon....
    Posts
    5,353

    Default

    I too have had the 0449 code for the past 2 weeks since I got gas at a Hess Station, I have tried to clear it with my programer but can't.. Any ideas?

    08 Avalanche 5.3
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  3. #3
    Legend


    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Location
    Piermont,NY, back in Northern NJ now, But may be in IL soon....
    Posts
    5,353

    Default

    Well update for me.... Started the truck today and the Light is Off.....

Similar Threads

  1. Replies: 87
    Last: 06-13-2014, 10:19 PM
  2. p0446 code
    By whooper16 in forum Performance & Fuel
    Replies: 0
    Last: 04-09-2012, 03:20 PM
  3. P0446 EVAP Code (check engine light)
    By ippielb in forum GM Powertrain
    Replies: 14
    Last: 09-30-2011, 02:56 PM
  4. error code P0446
    By snarl2004 in forum General Chevy & GM Tech Questions
    Replies: 3
    Last: 05-03-2010, 08:05 PM
  5. '06 Colorado with a P0446 CEL code
    By Boxman7481 in forum General Chevy & GM Tech Questions
    Replies: 0
    Last: 07-22-2009, 07:15 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •