I have a 2006 TB 4.2L w/ 44,000miles. Driving alond one day and the check engine light pops so i run to Autozone and find this emission code P0449 to be the problem. Now the rep. there explained to me and im not emission savvy by any means. If you have any info reguarding this issue i appreciate the feedback. I havent noticed any degraded performance and i have tried putting a can of Seafoam in the tank with no change also. Thanks again!
OBD code P0449
gillette2919
21 - 40 of 67 Posts
I appreciate the pictures. I got mine replaced but the red wire going to the quick connector for the sloenoid has been broken and now I have to fix it somehow.
Theory could be correct... My 96 blazer had the same solenoid (or at least very similar) located in back on top of the spare tire and at a 170K miles it never gave me any troubles.
I just called my local dealer to price this solenoid and he asked me about a purge solenoid. I've looked at parts list and diagrams and cannot find the purge solenoid. I was told it is located on the fuel tank. How do I know if this is bad instead the evaporative emission vent solenoid valve. I was told I need to do a smoke test. I have read all of post on this and no one mentions this purge valve.
IIRC the part in my pictures is the "vent valve" that is under the truck by the tank. The vent solenoid is on the engine on a vacuum port on the engine. When it is electronically opened it uses vacuum to suck the captured fumes in the charcoal canister up to the engine to be burnt up.
Someone please correct me if I have the names mixed up.
GM names: Purge solenoid on the intake manifold - item 14. Vent solenoid on the tank - item 11.
Attachments
This is what I thought but the service man at a local dealer told me that both are mounted near the tank. I replaced the vent valve and fixed the problem. Thanks for all the help I've found on this website.
who would have thunk it... the search function works 
My '06 SS just threw this code and with the info found here I was able to find the solution to the problem. I located the valve on the heat shield of the gas tank. Super easy to get too and swap out. I took it off to make sure I could get it off and another one back on before I went to the dealer to order it. No way would I pay the Stealership $94 to read the code to replace a $30 part covered under warranty.
Ended up talking to the dealer that I have dealt with in the past before and they said to bring it in and they would take care of it.... NO CHARGE for the computer scan or to replace the part... guess I got lucky.
:raspberry
My '06 SS just threw this code and with the info found here I was able to find the solution to the problem. I located the valve on the heat shield of the gas tank. Super easy to get too and swap out. I took it off to make sure I could get it off and another one back on before I went to the dealer to order it. No way would I pay the Stealership $94 to read the code to replace a $30 part covered under warranty.
Ended up talking to the dealer that I have dealt with in the past before and they said to bring it in and they would take care of it.... NO CHARGE for the computer scan or to replace the part... guess I got lucky.
:raspberry
Just saying Thanks!! I never have much to add to this forum but I gain a lot from it... Found the part at my dealer and it was 56 bones... went here
http://www.rockauto.com/catalog/raframecatalog.php?carcode=1432188&parttype=5148
it does take a lil time to load, but it should pull up for you... click add to cart..
Discount code 27952252310017
Using Your Discount Code Enter the code above in the "How did you hear about us" line of the shopping cart. This discount code expires on April 18, 2010
36 shipped...maybe someone that comes after me will now be able to do this that much easier.
http://www.rockauto.com/catalog/raframecatalog.php?carcode=1432188&parttype=5148
it does take a lil time to load, but it should pull up for you... click add to cart..
Discount code 27952252310017
Using Your Discount Code Enter the code above in the "How did you hear about us" line of the shopping cart. This discount code expires on April 18, 2010
36 shipped...maybe someone that comes after me will now be able to do this that much easier.
Rockauto had the part numbers:
ACDELCO Part # 2142215
GM #21996868
Got any more parts stores in town to call?
List $57. parts4chevys.com $36.
ACDELCO Part # 2142215
GM #21996868
Got any more parts stores in town to call?
List $57. parts4chevys.com $36.
Ok fellas, I have inspected for cracks in the filler tube (none found), I read somewhere that some tanks leak around where the filler tube mounts to the tank (put JB weld around it just in case), pulled the tank to inspect lines and pump (all were good and new looking), I have pulled the vent valve solenoid and cleaned it out. The only things that I have not looked at so far are the canister and the fuel pressure regulator. My question is should I go ahead and get a new vent valve and try it first or a canister? How often would the canister go and same for the regulator? I have about 94k miles right now.
Hi guys, I just replaced this part after reading through this thread. I got the 449, replaced the part, and cleared the code with my reader. First start, no problem. Second start, light comes back on, same code. Tried disconnecting the battery just to be safe, same thing. I'm lost. Any ideas?
21 - 40 of 67 Posts
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