Diesel Def Fix

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Thread: Diesel Def Fix

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    2.5L Iron Duke
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    Diesel Def Fix

    Hi All;

    Lots of problems with the new 2011 Duramax Diesel trucks. All def releated.

    Does anyone have any inside knowledge if GM is working on a permanent fix for this??

    Thank you

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    2.4 Liter SIDI ECOTEC 191185's Avatar
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    Re: Diesel Def Fix

    There will be no 2012 Duramax production until they get it fixed. So far, 2013 is the soonest we'll see the 'max back.

    All because of the Def

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    6.2 Liter LS9 Supercharged V8 MrCritical's Avatar
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    Re: Diesel Def Fix

    How hard of a fix can it be?

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    Re: Diesel Def Fix

    IMO, the whole diesel exhaust treatment systems seem like a complicated mess. I can only imagine the out of warranty issues down the road. Dodge met todays specs in 2007 and the still seem to have issues, but are probably way ahead of GM & Ford keeping those 'check engine' lights off. I guess that's why I'm here, probably going to a GASSER this time around, maybe GM.

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    Re: Diesel Def Fix

    Quote Originally Posted by 191185 View Post
    There will be no 2012 Duramax production until they get it fixed. So far, 2013 is the soonest we'll see the 'max back.

    All because of the Def
    Thank you for your insider knowledge.

    The new 2011 GMC Diesel is an AWESOME trucl all the way around. With the new emmision control requirements, it is doing its job with NO diesel fumes or smell at all from the truck. Tremendous power from the engine also.

    I bet the def tank will have to be replaced in all the trucks along with programming. The strange thing is that not all trucks have the problem!!

    Please keep this thread updated when more can be shared.

    Thank you

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    6.0 Liter L76 V8 Premium Member smith7629's Avatar
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    Re: Diesel Def Fix

    What are you guys talking about? The only DEF problem I know of is in extreme cold climates (like north, north Canada, Alaska) where the DEF is freezing. Tanks will require a more robust heater.
    2014 2SS/RS 1LE w/ Performance Exhaust

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    Re: Diesel Def Fix

    Just as I thought...no one can back this up.
    2014 2SS/RS 1LE w/ Performance Exhaust

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    Re: Diesel Def Fix

    Quote Originally Posted by smith7629 View Post
    What are you guys talking about? The only DEF problem I know of is in extreme cold climates (like north, north Canada, Alaska) where the DEF is freezing. Tanks will require a more robust heater.

    I personally have never heard of a DEF problem with the Duramax myself, either.


    Quote Originally Posted by smith7629 View Post
    Just as I thought...no one can back this up.

    Your previous post was posted at 6:53 A.M. LOL!! Let people wake up and smell the coffee.
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    Re: Diesel Def Fix

    My truck is saying that it is out of DEF even though it is full. The dealer can't fix it and they have another one there with the exact same problem
    There's a alot of talk about people having this problem on all the duramax fourms
    http://www.dieselplace.com/forum/sho...d.php?t=401456
    sound like a fix is on the way

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    Re: Diesel Def Fix

    Quote Originally Posted by Envoy4Life View Post
    I personally have never heard of a DEF problem with the Duramax myself, either.





    Your previous post was posted at 6:53 A.M. LOL!! Let people wake up and smell the coffee.


    I live up in Interior Alaska, and so far the temperatures are at an average of -35 F. This morning I woke up and it was -45 F. I bought the my 2011 Silverado 2500HD with the Duramax two weeks ago yesterday, and I have had to take it to the dealership 2 times already regarding the DEF tank. I always have the truck plugged in when I'm not using it. The DEF tank freezes solid, and there is nothing that can be done about it. To be truthfull, I really love this truck. It is comfortable, has lots of power, and I honestly cannot say that I have owned a better truck. The only problem, is that it would be nice to go one week before I have to take it back to the shop. At the dealership, they thaw the tank, re-flash the computer, and that is it. There is a heater in the DEF tank, but it doesn't do much good while it is -35 F outside...

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    Re: Diesel Def Fix

    Can you put a blanket on the tank? What about an aux heater?
    Just that time again to ignore certain people. I'm certain they will continue to try and instigate and antagonize while throwing up their arms saying they did nothing but are here on a civil basis. Not worth the time seeing how some just seem to know all.

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    Re: Diesel Def Fix

    Quote Originally Posted by hunterofalaska View Post
    I live up in Interior Alaska, and so far the temperatures are at an average of -35 F. This morning I woke up and it was -45 F. I bought the my 2011 Silverado 2500HD with the Duramax two weeks ago yesterday, and I have had to take it to the dealership 2 times already regarding the DEF tank. I always have the truck plugged in when I'm not using it. The DEF tank freezes solid, and there is nothing that can be done about it. To be truthfull, I really love this truck. It is comfortable, has lots of power, and I honestly cannot say that I have owned a better truck. The only problem, is that it would be nice to go one week before I have to take it back to the shop. At the dealership, they thaw the tank, re-flash the computer, and that is it. There is a heater in the DEF tank, but it doesn't do much good while it is -35 F outside...

    Can the truck start without DEF?
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    Re: Diesel Def Fix

    All they need to do is look at what Massey-Ferguson has done with the 8600 series. They plumbed a heating loop around the innerwall of the tank, directly off the engines cooling system. As the tractor warms up, the DEF will thaw. Simple enough, really.
    Thanks & Take care,

    Will


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    320,000 km/200,000 miles and counting.

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    Re: Diesel Def Fix

    I'm awesome like that!

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    Re: Diesel Def Fix

    I know the location of the DEF tank is causing some offroad problems with those who dont use roads much (farmers, ranchers, contractors, oil rig operations). Some dealerships have had custom DEF tank shielding built and installed. I am also aware of the DEF freezing. I did not hear that they are suspending production. I find that hard to believe given how well this truck is selling, and the fact that they have to over produce to build up enough trucks to maintain GM while the plants start going off line to tool up for the new body style. I cant see GM stop building Duramax trucks because the DEF is freezing or anything to do with the DEF system.

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