def problems in cold weather - Chevy and GMC Duramax Diesel Forum

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, Etc.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 01-07-2013, 04:31 PM Thread Starter
 
Join Date: Mar 2012
Posts: 4
def problems in cold weather

Is the winter front fooling engine temp sensor and not allowing def heater to work properly in cold weather -20 and colder
edthewelder is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 01-07-2013, 06:31 PM
Used to help out.
 
JOKER's Avatar
 
Join Date: Jul 2011
Location: SUPER STAR DESTROYER
Posts: 3,574
Quote:
Originally Posted by edthewelder View Post
Is the winter front fooling engine temp sensor and not allowing def heater to work properly in cold weather -20 and colder
I am unsure, but good question.

Are you freezing up?

The heater may come on automatically when the truck realizes the (frozen) DEF is not reducing NOx enough. Your guess is as good as mine.

I would think the DEF tank heater would use the ambient temp sensor if anything though.

Joker
JOKER is offline  
post #3 of 7 (permalink) Old 01-07-2013, 06:32 PM
Used to help out.
 
JOKER's Avatar
 
Join Date: Jul 2011
Location: SUPER STAR DESTROYER
Posts: 3,574
By the way, this is posted in the wrong place. Figured I'd help a welder out though. :P
JOKER is offline  
post #4 of 7 (permalink) Old 01-08-2013, 06:07 AM Thread Starter
 
Join Date: Mar 2012
Posts: 4
Yes I meant ambient sensor blocked by winter front
edthewelder is offline  
post #5 of 7 (permalink) Old 01-10-2013, 03:21 AM
DuramaxForum n00b
 
Join Date: Jan 2013
Location: Barkhamsted, CT
Posts: 11
I've heard there is a re-programming update on 2011's that increases the cycling frequency of the DEF tank heater. My 2012 recently had an issue with the DEF gauge reading 25% when it was actually full. Problem occurred after truck was exposed to sub and near zero temps. Dealer did a manual re-set of the instrument cluster and prob solved (for now?). Unsure if the cold temps we're a contributing factor or not.
goose997 is offline  
post #6 of 7 (permalink) Old 01-10-2013, 09:36 AM
Vanned this place
 
TheStepChild's Avatar
 
Join Date: Feb 2010
Location: Michigan
Posts: 8,123
Moved to lml area

Quote:
Originally Posted by Jeremy Clarkson View Post
Some say he was conceived in a cargo van
TheStepChild is offline  
post #7 of 7 (permalink) Old 01-10-2013, 03:41 PM
DuramaxForum Enthusiast
 
Join Date: Feb 2011
Location: SW Ont
Posts: 3,403
ed, we haven't heard from anyone from the far north having the problem you are asking about.

2011 GMC 2500 LML CCSB 4x4 SLT
sold 2010 GMC 2500 LMM CCSB 4x4 SLT
sold 2004.5 GMC 2500 LLY ECLB 4x4 SLE
redwngr is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome