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Showing results for tags 'p0446'.
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EVAP code p0446 HELP
Brad OSullivan posted a topic in Gen III and IV Small Block & DrivetrainHello guys, this has probably come up a million times but my 2005 silverado 1500 with the 5.3L has a p0446 EVAP code. Its for a vent control circuit malfunction. I have done a ton of research and have replaced a few parts so far including the vent valve, fuel cap, and fuel tank pressure sensor. WHAT else can it be!! The only symptoms I notice that could be a clue is every now and then when I begin fuelling, the pump stops like 4 or 5 times and then pumps steady to fill up. Could this be a sign of a bad canister? I'm not sure if anyone has any idea let me know, I got to pass emissions in February. Thanks!
My son in law called with a problem on his 05 Suburban. Says its very hard to refuel, the pump keeps kicking off. He said its been doing it for several months now. I had him to get the trouble codes ran and it is showing P0455 and P0446. He also stated that he had changed the charcoal canister about a year ago with a used one. He said he checked to make sure it wasn't clogged up and causing the issue, so he blew it out with compressed air... He said charcoal "dust" came flying out. I did read on one thread here about the anti-theft screen being a possibility for the hard to re-fuel. http://www.gm-trucks.com/forums/topic/150547-difficulty-in-refueling/?hl=fueling thanks
Few questions regarding my 05 silverado
mike7767 posted a topic in 1999-2013 Silverado & Sierra 1500Hey, this is my first post so take it easy on me. Just have a few questions. I have a 2005 Chevy silverado 1500 z71 just in case that helps in any way. 1. Brakes - slightly squeaking / squealing more of a low pitch when breaking at lower speeds. not sure if just something like rust or anything, it is not a super loud screech so i'm pretty sure it isn't an indicator. Wondering if anyone knows what it could be. - Also, im not sure if it is maybe just how it is on that truck, but the brake pedal, I noticed when I press on the brakes, it kind of stays there for a brief second, and is able to move up and down a little without resetting back or pushing against and staying with my foot like most brake pedals seem to do. 2. Check engine code p0446 - have had the light go on and off for a couple of weeks. When fueling it cuts off at a little over 3/4 tank full. I believe it to be something clogged in that system based off of what i've read online. Wondering if anyone else has had the same problems or would know of what exactly to do. 3. Exhaust. - I notice the exhaust is 2.75" in diameter stock, which seems to make it more difficult to find any parts like exhaust cutouts or mufflers. Wondering if anyone has any suggestions for that stuff. Just looking to gather more info, get a better idea of what is going on, maybe learn from others who have had the same issues or resolved similar issues.
evap p0446 in the rain
Gaster posted a topic in 1999-2013 Silverado & Sierra 1500Hello i am new here so i wanted to start by thanking everyone that may look at this post. i have a 2012 Silverado 1500 5.3 4x4 crew cab with 38K on it. the truck i like brand new and i have owned it for 5 months. well now that winter has hit i started getting a p0446 error code. i have read tons off forums on the topic and have tried all of the normal cleaning of the filter, checking connection, blowing out and testing the control valve. i have read one topic about water intrusion causing this and i believe that is my problem. the last time i cleared the code we had over a week of dry cold weather and no code appeared. well the last two days it has been raining hard and when i remote started my truck this morning it ran for about 2 minutes and shut down. the code came back. it has only ever set the code while running in remote start and when it is raining. so my question if this is a water problem were should i be looking for the short? the truck sits outside as it is to big for my garage. Thanks in advance for any help!
2007-2013 Evap Canister Vent Solenoid
CamaroLovr posted a topic in 1999-2013 Silverado & Sierra 1500So I just wanted to help everybody out by telling you my latest problem and repair with my 09 Silverado with FlexFuel 5.3. Please pin this to the top because this is by far the easiest, cheapest way to replace the vent solenoid on these trucks and this is a very common problem. I was showing a P0449 code which I decided seemed like the canister vent solenoid beside the gas tank connected to the Evap canister. The only reason I finally decided to fix it was because my remote start wouldn't work with a code thrown. Since it's getting cold again, I want that back. My first stop was the old interweb. What I found was this very useful article: http://www.gm-trucks.com/forums/topic/75210-evap-vent-valve-solenoid/. I hope that link works. I don't post on forums often but people need to know this. A post by odayflor in this thread really helped me understand what was going on. That didn't help me figure out why my truck already had the dual port solenoid though so off I went to the dealer and Advance Auto Parts. What I finally found was this: Basically on 99-06 trucks there was a tube leaving the Evap canister that lead into a vent solenoid. This solenoid is ACDelco #214-2149 or GM #25932571. It has 1 inlet and vent from the round lid on the solenoid. Now this design was prone to clogging and producing a P0449 code so, In the 2009's or so they started building trucks with a solenoid that had 1 inlet and 1 outlet with a corrugated tube attached that was routed to above the transmission. There is no listing that corresponds to a 2009 having this dual port design at the dealer or any other aftermarket parts store until you get into the 2011-up models. They show the old single port design. Now if you go to the dealer with a 1999-2010 truck, they will tell you that you have to buy the conversion kit which is the later dual port solenoid and remote filter for ~$100 dollars, plus the jumper wire for $40, since the plugs have now changed on the solenoids(more on that later), and provide your own 5/8" heater hose and 4 hose clamps. This relocates the inlet above the transmission bellhousing in order to ,theoretically, prevent clogging and water contamination. Here's what they don't tell you, and won't even if you know this and ask about it. I was told "sounds like you're just grasping at straws" by my local friendly a** rapist GM parts dealer. In there parts catalog, a 2011 Crew Cab Short Box Silverado lists a GM #20981705 ACDelco # 2142339. From RockAuto it costs $48.79. and only $75 at the actual dealer. This is a dual port Solenoid, bracket, supply hose with quick disconnect fitting, corrugated vent tubing, and remote filter with shield all pre-assembled. This particular part number is for a Crew Cab with a short box but there are 2 other part numbers to accomodate the other length hoses for the other length trucks just check out RockAuto. I decided to just order it and see just out of curiosity. Guess what? It fits my 2009 like a glove!!!! Even down to the matching OEM parts numbers stamped on the parts. Once done, I reset the code by pulling the battery clamp for 30 seconds and she started right up with the remote start. So instead of buying the retrofit kit from the dealer for $100 then cobble it together with heater hose and clamps, you can buy the whole factory assembly for $48.79. On the Jumper wire. This is necessary any way that you go for the most part. I've seen some people post that they didn't need them with aftermarket brands but I definitely did with the original ACDelco one. The reason being is that GM changed the replacement solenoid plug style from an "oval" to a "square" style plug in. On RockAuto it's only $17.73 ACDelco #19257603 so order it too. So, If you have a 99-2010 and only have the single inlet solenoid and simply want to replace that and don't want to fool with a relocated filter, use ACDelco 214-2149. But if you already have a dual port solenoid or you want to replace your single port with a relocated filter assembly use ACDelco # 214-2339 for crew cab short box trucks (remember to check @RockAuto to confirm fitment on your length truck) and for $78 shipping and all, you can have a factory part that doesn't look like its been all hacked up and will only take a 13mm wrench and about 10 minutes time to install. It even comes with clamps on the corrugated tubing to snap it to brake lines along the way so its not just dangling.
P0446 evap vent diagnostic 00 Sierra 5.3L V8
tejay posted a question in Ask the GM TechnicianMy 2000 Sierra 5.3L v8 has had a P0446 error code for some time. I had the evap vent retrofit kiet installed with no change in symptoms. I can go for 2 days, 2 weeks or 2 months before the Service endine soon light comes on again. Sometimes I think it' the weather or maybe the load I'm hauling, or possibly the ethanol in the gas, but this problem just will not seem to go away. Any suggestions?