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2011+ LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 01-24-2011, 06:26 PM   eBay Motors  #1 (permalink)
 
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Problem Trucks

I have noticed that most of the trucks with problems are Denali. Am I wrong? I don't seem to recall any Silverado's with problems, just askin'. Are there any dates of manufacture that people might be interested in checking? Is there anything that we as owners of 2011 Duramax trucks can keep an eye out for that help could possibly help each other with repairs?
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Old 01-24-2011, 11:23 PM   eBay Motors  #2 (permalink)
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Unfortunatly the trucks are so new you wont see any "common" problems for over a 6-12 months.
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Old 01-24-2011, 11:26 PM   eBay Motors  #3 (permalink)
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I've seen more Chevrolets with problems then Denali's, my assumption is this is due to the number of Chevrolets vs Denali's.
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Thank you Rob Coddens (Idaho Rob), Dustin @ ATP, Scott @ SDP, Kory Willis, and Mike L. for all of your help!

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Old 01-25-2011, 06:25 AM   eBay Motors  #4 (permalink)
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the only two problems I know of, and both are trivial and easily fixed are the leaking down pipe (new seal and re-seat), and the Urea tank indication issue (re-flash)..

what other problems are apparently plaguing us?
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Old 01-25-2011, 07:00 AM   eBay Motors  #5 (permalink)
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Quote:
Originally Posted by MD11 View Post
the only two problems I know of, and both are trivial and easily fixed are the leaking down pipe (new seal and re-seat), and the Urea tank indication issue (re-flash)..

what other problems are apparently plaguing us?
The only problem I've seen "plaguing" LMLs is the DEF issues taht the re-flash seems to only addressed in some trucks.

I've seen complaints about transmissions, fuel mileage, boost leaks, power loss, etc...

Like the second poster said, the trucks haven't been out long enough to see "common failures" or problems that are "plaguing" the model.

I personally think there are serious enough issues in SOME of these trucks that I won't buy one, but it's something you have to sort of expect with the bigger modifications this year.

Some people may consider the EFI Live issue a "plaguing" problem as well.
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Thank you Rob Coddens (Idaho Rob), Dustin @ ATP, Scott @ SDP, Kory Willis, and Mike L. for all of your help!

05 LLY CCSB 4wd - Mods coming (Truck Love from ATP Trucks and Copperhead Diesel expected soon)
SOLD: 05 LLY, 05 LLY, 09 LMM, 02 LB7

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Old 01-25-2011, 08:25 AM   eBay Motors  #6 (permalink)
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I currently have GM Customer Service involved in my issues... Loss of power and fuel mileage, was getting nothing out of my dealer's service department.

Last conversation with them was yesterday, am waiting to hear back.

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Old 01-25-2011, 09:45 AM   eBay Motors  #7 (permalink)
 
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I not trying cause any problems, but I see complaints on this forum and was just wanting to know if problems were leaning to one body style or the other. I do have an interest in the problems with any Dmax since I own one of them. From the post on this forum it seems to me that there are problems with the Denali but not the Silverado. I just think there may be a link to the problems with date of manufacture.

"I've seen complaints about transmissions, fuel mileage, boost leaks, power loss, etc..."

That is what I am getting at, problems we can keep track of so new owners can come here and ask questions and maybe find the right track to getting their problems fixed.

Once again I am not trying to point a finger at either body style.

Title of another thread here.
"11 2500HD Denali I hate mine anyone else?"
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Old 01-25-2011, 09:49 AM   eBay Motors  #8 (permalink)
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Quote:
Originally Posted by Indnavyvet_ View Post
I not trying cause any problems, but I see complaints on this forum and was just wanting to know if problems were leaning to one body style or the other. I do have an interest in the problems with any Dmax since I own one of them. From the post on this forum it seems to me that there are problems with the Denali but not the Silverado. I just think there may be a link to the problems with date of manufacture.

"I've seen complaints about transmissions, fuel mileage, boost leaks, power loss, etc..."

That is what I am getting at, problems we can keep track of so new owners can come here and ask questions and maybe find the right track to getting their problems fixed.

Once again I am not trying to point a finger at either body style.

Title of another thread here.
"11 2500HD Denali I hate mine anyone else?"
Odds are if a company makes 100k trucks, at least 1 of them will have a problem. I don't know how many trucks GM makes a year, but I'm guessing they've sold a good number of LML trucks if they just re-hired 700 people to make these trucks.

DEF is a solid known problem that GM seems to be working on. The other problems, seem to be the exception to the rule.
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Thank you Rob Coddens (Idaho Rob), Dustin @ ATP, Scott @ SDP, Kory Willis, and Mike L. for all of your help!

05 LLY CCSB 4wd - Mods coming (Truck Love from ATP Trucks and Copperhead Diesel expected soon)
SOLD: 05 LLY, 05 LLY, 09 LMM, 02 LB7

Build Threads : 2005 Chevy Silverado | 1978 Ford Bronco (Sister Site)
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Old 02-21-2011, 12:57 PM   eBay Motors  #9 (permalink)
 
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Angry Def issue

Hi there.

New to the forum and just wanted to add my "experience" with the DEF issues.

I have a 2011 Denali HD with the new generation Duramax.

I live in Alberta and work all over western Canada. We get real blasts of winter of winter up here in the frozen north.

I was just - 38C (without the windchill) where I was working last week.

The DEF system is a complete joke for cold weather environments.

I cannot believe that GM engineers decided upon such a system for use on vehicles that will be introduced to such conditions. Urea and distilled water? That is a great idea.

My truck is currently in the shop for the fourth time in 27,000 km for DEF related issues.

It has completely frozen up twice and other times it was the sensors (or some other DEF related component) acting up due to the figid temperatures.

The tank has been dropped twice and all the current GM computer flashes have been completed. Probably another one will be done today.

I can no longer drive this truck in confidence and am always wondering when something will happen again.

I have driven GM all my life and this is in fact my first ever diesel engine. I pull a trailer so the added power is fantastic in every way.

But this DEF situation has gotten me to a point where I am now losing money by missing meetings etc...

I see most of the posts are from down south.

Please put the word out to anyone thinking about purchasing a truck with the Duramax engine NOT to consider it if they live in a very cold climate!

Trust me it is not worth the grief or the blood pressure flucuations!

Signed: One very, very disappointed, disgusted and fed up GM customer!





Quote:
Originally Posted by TDFDiesel View Post
Odds are if a company makes 100k trucks, at least 1 of them will have a problem. I don't know how many trucks GM makes a year, but I'm guessing they've sold a good number of LML trucks if they just re-hired 700 people to make these trucks.

DEF is a solid known problem that GM seems to be working on. The other problems, seem to be the exception to the rule.
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Old 02-21-2011, 03:53 PM   eBay Motors  #10 (permalink)
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for what it is worth, you may have to be patient, i beleive the really cold weather issue will be rsolved by next winter for sure. Out of curiousity, what is the warmest temp that you have had problems at. Here where i live Okanagan B.C., it never gets colder than -18C (-1F), and i have never had an issue with DEF. I'm sure it has frozen, but i guess DEF heater has been doing its job, maybe any colder then i would see a problem?
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