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Old 01-10-2012, 09:00 PM   #1
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Default P0449 Error Code

Guys, my wife's '08 GXP is throwing a code P0449. Any ideas where I should begin in figuring out what the problem is ? I'm not too familar with the components in the emissions system or even where some of it is located but I am hopeful to avoid a trip to the dealership. Any help is appreciated, thanks in advance for the help
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Old 01-10-2012, 09:26 PM   #2
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I would start by testing the fuel vent solenoid. I dont know much about this cel, but google search came up with a lot of this issue.
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Old 01-10-2012, 09:28 PM   #3
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Is that the solenoid that's on the drivers side up near the fuel filler neck ? Where is the evap canister located ?
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1987 Buick Grand National - No, I'll never sell it !
2000 Trans Am, M6, white, GM WS6 hood, NO Mods - SOLD this one too
1997 30th Anniversary Z28, A4 w/3.73's, 37k miles - SOLD
2000 Trans Am, M6, Black, GM WS6 hood - SOLD
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Old 01-11-2012, 11:16 AM   #4
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I had the same error code with my 2006 Impala SS and, after a non-trivial amount of time testing various wires, replacing vent and purge solenoids, checking the gas tank filler neck, etc. I would up taking the car to the dealership.

It took the dealership 4 days to determine the problem which, they assert, magically disappeared during the diagnostic process. Fortunately, they only charged me a $39 diagnostic fee. Unfortunately, they did dork up the plastidip on one of my wheels and they broke the OBDII socket bracket under the steering wheel, but at least I can use my remote starter again..

Wes
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Old 01-11-2012, 01:39 PM   #5
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I just had the same code on my 2006 GXP. I replaced the fuel vent solenoid and canister that is near the fuel fill neck like you said. No code for a week now. Part was $29 from local dealer and they had it in stock. I will get the part number for you when I get home tonight. Part is easy to replace by removing drivers rear wheel and then removing the splash shield. Took me 30 mins not including going to pick up the new part.
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Old 01-12-2012, 01:39 PM   #6
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Quote:
Originally Posted by MY06GRANDPRIXGXP View Post
I just had the same code on my 2006 GXP. I replaced the fuel vent solenoid and canister that is near the fuel fill neck like you said. No code for a week now. Part was $29 from local dealer and they had it in stock. I will get the part number for you when I get home tonight. Part is easy to replace by removing drivers rear wheel and then removing the splash shield. Took me 30 mins not including going to pick up the new part.
Holy **** that badge under the hood if freaking awesome! How in the hell did u do that, pm please
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Old 01-12-2012, 07:28 PM   #7
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Sorry to not get back to you last night. I could not find my recipt with the part number but I looked it up. The GM part number is 25932569 and it looks like this:
Click the image to open in full size.

However, it looks like it is different for the 2007-2008. The GM part number for you is 25932568

and yours looks like this it may be more expensive as it comes with the bracket and hose piece for some reason?
Click the image to open in full size.

Looks like yours is slightly different but all I know is that I replaced this part on my 2006 GXP and cleared the code and it has not been back.
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Old 01-12-2012, 07:50 PM   #8
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Quote:
Originally Posted by rm08gxp View Post
Holy **** that badge under the hood if freaking awesome! How in the hell did u do that, pm please
rm08gxp you have a PM. If anyone else wants the details on how to do the custom painted hoodliner with the GXP logo let me know and I will do a full write-up and post it.
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Old 01-12-2012, 07:53 PM   #9
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I would alzo like to know I think it looks great
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Old 01-12-2012, 08:35 PM   #10
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Thanks for the good advice guys. Based upon the information provided I bought the solenoid and it should arrive soon. I'll post again when I see if it clears the problem. Will I need to reset the computer to clear the error code ?
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1987 Buick Grand National - No, I'll never sell it !
2000 Trans Am, M6, white, GM WS6 hood, NO Mods - SOLD this one too
1997 30th Anniversary Z28, A4 w/3.73's, 37k miles - SOLD
2000 Trans Am, M6, Black, GM WS6 hood - SOLD
1995 Z28, M6, Red, Suncoast "SS" Hood, SLP 2OTL Exhaust - SOLD
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Old 01-12-2012, 10:10 PM   #11
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I cleared the code using my Predator. Not sure if it will clear itself but you could always just disconnect the battery for like 20 mins or find a friend with a scanner.
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Old 01-19-2012, 09:42 PM   #12
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Most auto parts stores will clear the code for you for free.
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Old 01-23-2012, 06:46 PM   #13
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Disconnecting the battery for 20 minutes or so took care of it
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2008 GMC Sierra Z71 All Terrain 4x4
2008 Grand Prix GXP - in Jewel Red Tintcoat
1987 Buick Grand National - No, I'll never sell it !
2000 Trans Am, M6, white, GM WS6 hood, NO Mods - SOLD this one too
1997 30th Anniversary Z28, A4 w/3.73's, 37k miles - SOLD
2000 Trans Am, M6, Black, GM WS6 hood - SOLD
1995 Z28, M6, Red, Suncoast "SS" Hood, SLP 2OTL Exhaust - SOLD
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Old 01-23-2012, 09:02 PM   #14
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Quote:
Originally Posted by 2000blkta View Post
Disconnecting the battery for 20 minutes or so took care of it
Did u replace the parts? or just clear the code?
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Old 01-23-2012, 09:11 PM   #15
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Sorry. I meant disconnecting the battery cleared the code after I replaced the vent/purge solenoid. Ordered online for $44 shipped.
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2008 GMC Sierra Z71 All Terrain 4x4
2008 Grand Prix GXP - in Jewel Red Tintcoat
1987 Buick Grand National - No, I'll never sell it !
2000 Trans Am, M6, white, GM WS6 hood, NO Mods - SOLD this one too
1997 30th Anniversary Z28, A4 w/3.73's, 37k miles - SOLD
2000 Trans Am, M6, Black, GM WS6 hood - SOLD
1995 Z28, M6, Red, Suncoast "SS" Hood, SLP 2OTL Exhaust - SOLD
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Old 04-11-2013, 08:02 PM   #16
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I just bought an 06 GXP (LOVE IT!!!) and it has the SES light on for this code too. Seems to be pretty common I take it... But a fairly inexpensive and easily done repair.

Later
Mike
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2000, 2006, 25932569, cherry, chevy, dark, fuel, gmc, grand, impala, metallic, neck, number, p0449, part, prix, replace, sa, solenoid


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