GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 2 of 2 FirstFirst 12
Results 11 to 13 of 13
  1. #11


    Just fixed my po449 code. Bought the "vapor canister vent valve" from Napa. Part# 600-1627. Cost was 94.99 they sold it to me for "garage cost" at $77.99. This valve is connected to the filter. I just uncoupled the one clip, turned the solenoid 40 deg and pulled it out. This is located at the front of the gas tank, drivers side frame. Very easy fix for a BS system. Everyone's solenoid is normally open and when u start the vehicle it closes for vacuum purposes. My solenoid was bad so it was venting all the time. I also bought a foot of 5/8" hose and connected it to the charcoal cannister on the tank. So nothing is moved. I blame the failure on a POS Mexico made solenoid. I ain't buying the relocation thing.

  2. #12

    Join Date
    Sep 2010
    everett, massachusetts


    change you fill up methods and you may be OK. if the canister is damaged from liquid fuel after a period of time this may return.

  3. #13


    After a couple hundred miles, I now keep getting a PO446 code. I take the hose of the vent solenoid and can only blow air thru if the gas cap is off. Take the cap off and blow right thru it????

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Check Engine Light on; P0449 code?
    By anton brauner in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 2
    Last: 07-09-2012, 03:46 PM
  2. Another Code! P0449
    By harristw in forum GM Powertrain
    Replies: 2
    Last: 08-19-2011, 08:48 AM
  3. code is it po449 or p0449 silverado 2006 1500 flex
    By rf58 in forum General Chevy & GM Tech Questions
    Replies: 0
    Last: 07-24-2011, 02:28 PM
  4. Emission vent valve code p0449
    By alw in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 07-15-2011, 11:22 AM
  5. P0449 Code SES light.
    By ajarman in forum General Chevy & GM Tech Questions
    Replies: 4
    Last: 06-06-2011, 02:59 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