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2012 Duramax

wurgs

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wurgs Senior Enthusiast

wurgs

Posted
Posted

I just found out I will be getting a new Duramax for work. It will be replacing a 2005 duramax and I was wondering if there is any major changes I need to know about. I have been hearing it has a urea system to help with pollution control but I don't know anything about it.

How it usually works is it will show up one morning and I will expected to just get in and go to work with no chance to check the owners manual out.

wurgs Senior Enthusiast

wurgs

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I should have probably put this in the Diesel forum

8.1HD/ALLISON Senior Enthusiast

8.1HD/ALLISON

Posted
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make time ,take it (manual)home or just drive it till it stops and say to the boss "what "?

 

lmao

 

LOL I vote for that one. There shouldn't be much difference between the two. The urea system is about it, and that consists of an extra tank ( for example a washer fluid tank) that you keep full. But definately read the owners manual when you get time.

wurgs Senior Enthusiast

wurgs

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Never thought about that one. Thanks

Diesail Enthusiast

Diesail

Posted
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3 difference IMO

 

1) The DPF (diesel particulate filter)

2) DEF (diesel exuast fluid or urea)

3) Lots more power

 

The DPF shouldn't even be noticed unless you do ALOT of short trips. About every 400 miles it goes through a regen or cleaning process. You won't even notice it happening but it requires highway speeds to do its thing. The process will stop and start, again without you noticing but if it can't finish it will display a message to to clean filter. I have an '08 and do about 50 / 50 of local and highway driving and in 3 years I have never seen the message.

 

The DEF tank will need to be filled and there is a display that shows % remaining. If you do not fill it the engine will go into reduced power until filled.

 

I'm sure you will know what to do with #3.

wurgs Senior Enthusiast

wurgs

Posted
  • Author
Posted

3 difference IMO

 

1) The DPF (diesel particulate filter)

2) DEF (diesel exuast fluid or urea)

3) Lots more power

 

The DPF shouldn't even be noticed unless you do ALOT of short trips. About every 400 miles it goes through a regen or cleaning process. You won't even notice it happening but it requires highway speeds to do its thing. The process will stop and start, again without you noticing but if it can't finish it will display a message to to clean filter. I have an '08 and do about 50 / 50 of local and highway driving and in 3 years I have never seen the message.

 

The DEF tank will need to be filled and there is a display that shows % remaining. If you do not fill it the engine will go into reduced power until filled.

 

I'm sure you will know what to do with #3.

 

 

Is the DPF a big deal? I'm a land surveyor and depending on what jobs we get the trucks sometimes idle for hours and don't get much highway miles on them. We have 2- 2006 chevys that have over 100000 miles difference on the odometer because of the job schedualing. Does the cleaning process take long or will just a few high speed miles do it?

Diesail Enthusiast

Diesail

Posted
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Not a big deal at all. It takes 15-20 minutes total to do its thing. But that time that it sits and idles it will just wait until soem highway time. If your trip is only 10 minutes it will pickup again next chance it gets.

Zrxpilot Enthusiast

Zrxpilot

Posted
Posted

Father in law just sold his 04 3500 Duramax 4x4 chassis cab and bought a 2011 of exactly the same type but with the Allison. I got the opportunity to pick it up and drive it a 1000 miles home from brand new. First noticible difference is the 2011 is a heavier rig. Rides a bit stiffer, sits up a bit higher and has a fold down center section (bare bones truck here).

 

The def thing isnt a big deal. The light comes on and you fill it up. Would be better if you could fill it up on the side of the truck in lieu of under the hood but its not like you are going to mess with this alot. You fill it to match the oil changes.

 

The region thing (s??) thru me for a loop the first time I heard it. Idle jumps up a bit for minute or two. No biggie.

 

Chassis cab trucks dont get the high hp motor. Not sure why. This 2011 with just under a 1000 miles seems like a slug in comparison to my 02 and dads 04. Maybe it needs time to break in. Still powerfull....just was expecting more.

 

Interior is much nicer. I could easily drive this every day. The 05 with a manual got tiresome after awhile.

 

New trucks ride on 17's and is a bit wider. Rear axle is a bigger diameter. Old truck would drop the cattle trailer a good 2.5" when loaded. This 2011 barely dropped an inch.

 

The 04 could sit for weeks and start on its own. New truck needs a battery tender or it will go dead. Something is drawing power. No big deal if you drive it every day but something to think about if its parked.

 

Fuel is reccomended as low sulphur at 15ppm. Old truck ran on anything.

 

No regrets. The new styling and general enjoyment of driving outweighs any negatives found so far.

Diesail Enthusiast

Diesail

Posted
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I would be talking to the dealer about the battery issue. I have left my '08 parked for a couple weeks at a time and it still fires right up with 4 year batteries. As to the 15ppm diesel, it's all you can buy anymore unless you travel to mexico.

Prokopchuk_9 Senior Enthusiast

Prokopchuk_9

Posted
Posted

Make sure you do an EGR delete and PCV reroute right away...will help lengthen the life of the dmax and it will run cleaner

 

 

Ya and rip that power/fuel mileage robbing hunk of crap def off it. And replace it with straight pipe...then look for a nice HOT crazy larry tune from EFI live LOL...that would be a fun work truck. Get to destroy a transmission and not worry about it...

wurgs Senior Enthusiast

wurgs

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Just saw it for the first time today at the place where its getting the topper and safety lights put on and was wondering what the black plastic tank looking thing is under the front passenger door near the frame? It actually sits lower than the frame and looks like it would get hit alot when going offroad which concerns me a little

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