2020 Def level recall - Chevy and GMC Duramax Diesel Forum
L5P TSB (service bulletins, recalls, updates) Postings of Tech Service info for any New L5P engine issues.

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 10-07-2019, 03:24 PM Thread Starter
Junior Member
 
Join Date: Apr 2016
Posts: 40
2020 Def level recall

Took my 2020 in for the tire shakes and the service advisor said there is some sort of def level recall. figured I would mention it.
600+ duramax is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 10-08-2019, 09:27 AM
Junior Member
 
Busa Dave's Avatar
 
Join Date: Aug 2019
Posts: 179
The Bulletin N192266750 for a software flash I have documented in another thread. It is not a recall and it did not fix my truck when flashed last week. My DEF levels still show half to almost empty when I filled the tank. It seemed to work for a few days showing full then reverted back. Not good -- with mine because of the unknown fix and cause sent the Lemon Law notification letter to GM per the required instructions and per my State Texas requirement Texas Lemon Law Codified as Occupations Code Chapter 2301.

2020 GMC Denali 2500
Busa Dave is offline  
post #3 of 9 (permalink) Old 10-13-2019, 06:25 PM Thread Starter
Junior Member
 
Join Date: Apr 2016
Posts: 40
I worded that incorrectly. It's a TSB. My 2020 has not had an issue with DEF usage and or level issue.
600+ duramax is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 11-23-2019, 11:10 PM
Junior Member
 
Join Date: May 2010
Posts: 32
My dealer did this on Thursday. Along with the seat belt fix and ordered a front winter grill cover. Mine I had just filled the Def, it showed one bar low before the flash. Showed completely full after.
2001400ex is offline  
post #5 of 9 (permalink) Old 11-24-2019, 11:01 AM
Junior Member
 
Busa Dave's Avatar
 
Join Date: Aug 2019
Posts: 179
Quote:
Originally Posted by 2001400ex View Post
My dealer did this on Thursday. Along with the seat belt fix and ordered a front winter grill cover. Mine I had just filled the Def, it showed one bar low before the flash. Showed completely full after.
Keep your eye on it. Mine did the same thing then went haywire again. New fix is to install new DEF Tank Assy. Part is backordered. Been waiting a month so far.

Update am 25 November. GM Case Worker on my claim advised that as of this morning it is in Engineering redesign. So who knows.... There is no fix for this issue as of today per GM.

2020 GMC Denali 2500

Last edited by Busa Dave; 11-25-2019 at 09:06 AM.
Busa Dave is offline  
post #6 of 9 (permalink) Old 12-26-2019, 06:39 PM
Junior Member
 
3voDMasx's Avatar
 
Join Date: Oct 2019
Posts: 29
I got the software update today. I don’t think it did anything. Even Gas % is stuck at 65%. So much money for this trucks and to run in to small issues is annoying
3voDMasx is offline  
post #7 of 9 (permalink) Old 12-26-2019, 06:45 PM
Junior Member
 
Busa Dave's Avatar
 
Join Date: Aug 2019
Posts: 179
Quote:
Originally Posted by 3voDMasx View Post
I got the software update today. I donít think it did anything. Even Gas % is stuck at 65%. So much money for this trucks and to run in to small issues is annoying
Software update is useless. The part is in engineering redesign. I get an update every week from my case rep at GM.

2020 GMC Denali 2500
Busa Dave is offline  
post #8 of 9 (permalink) Old 12-26-2019, 06:52 PM
Junior Member
 
3voDMasx's Avatar
 
Join Date: Oct 2019
Posts: 29
Quote:
Originally Posted by Busa Dave View Post
Quote:
Originally Posted by 3voDMasx View Post
I got the software update today. I don’t think it did anything. Even Gas % is stuck at 65%. So much money for this trucks and to run in to small issues is annoying
Software update is useless. The part is in engineering redesign. I get an update every week from my case rep at GM.
That’s good news. I hope it gets redesign ASAP
3voDMasx is offline  
post #9 of 9 (permalink) Old 12-27-2019, 07:30 AM
Junior Member
 
sdelam's Avatar
 
Join Date: Aug 2019
Location: Ohio
Posts: 46
Garage
I have had the DEF level vary day to day. I have had the software flash which did not help. I also run a iDash and it can show DEF tank level and is a more accurate percentage based indication. What I've noticed is that it seems to slosh quiet a bit. Acceration/braking will cause the level % to vary 20+ percent. Since I have been watching, the DIC went down to one bar (and stayed there for a few days) while the iDash still showed 49% while stationay. Filled it at the local truck stop and put 4.3 gallons in. I dont think the truck has any idea how much DEF it has.

2020 Denali 2500 Duramax Crewcab 4x4

Last edited by sdelam; 12-27-2019 at 07:32 AM.
sdelam is offline  
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










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