Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > GENERAL DISCUSSIONS > General Discussions about our Montanas
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 06-08-2020, 08:07 AM   #41
prndl
Montana Master
 
prndl's Avatar
 
Join Date: Apr 2017
Location: 1000 oaks
Posts: 718
M.O.C. #19630
Quote:
Originally Posted by Carl n Susan View Post
DEF that is old, kept in high temps or sunlight, or freezing temp has its effectiveness reduced significantly. The consumption is not affected. The SCR in modern light duty trucks introduces a fixed amount of DEF per unit of diesel fuel. Burn more more fuel (i.e. towing) and you consume more DEF. The SCR doesn't know or care about the quality of the DEF. Nor is there onboard NOX sensors to determine if the DEF rate is reducing the amount of NOX. The only way to test the effectiveness is via a Smog check (be sure to ask Volkswagen how they handle this situation).
Actually my RAM Cummins has TWO NOx sensors in the exhaust stream.
__________________
2011 2955RL Reese Sidewinder 5th Airborne
2014 RAM 2500 CD Demco Recon Hitch
4X4 Crew Cab/Short Bed
prndl is offline   Reply With Quote
Old 06-08-2020, 09:11 AM   #42
mhs4771
Montana Master
 
mhs4771's Avatar
 
Join Date: Dec 2009
Location: Sebring
Posts: 2,734
M.O.C. #9969
GM also uses NOx sensors. Had to have both replaced on my previous 2011 because they were defective and over time started kicking false emission codes.
__________________
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
mhs4771 is offline   Reply With Quote
Old 06-08-2020, 11:08 AM   #43
Carl n Susan
Site Team
 
Carl n Susan's Avatar
 
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 4,408
M.O.C. #4831
I was wrong about the DEF system It indeed has NOX sensors and alters the amount of DEF depending on the NOX levels detected.

Here is a link to a good explanation of the system
https://www.searchautoparts.com/moto...ology?page=0,1
__________________
Carl (n Susan) Youngren
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

Carl n Susan is offline   Reply With Quote
Old 06-08-2020, 09:52 PM   #44
smkn454 Mike
Established Member
 
Join Date: Mar 2019
Location: hennepin
Posts: 24
M.O.C. #23725
I have a 2019 Chevy LTZ Duramax and I can go around 1000 miles on 2.5 gal which is about the same as my 2013 Chevy Duramax pulling yhe same 3791 . The is a update available regarding the amount of regens which the dealer just updated mine while in the shop.
smkn454 Mike is offline   Reply With Quote
Old 06-10-2020, 11:04 AM   #45
Cook-Den
Established Member
 
Join Date: Feb 2018
Location: johnstown
Posts: 34
M.O.C. #21280
I am scheduled to get my 2019 3500 reprogrammed, i was curious as to if you noticed any change to your truck after the upgrade. Let us know once you get some feedback.
Thanks in advance
__________________
Denny & Cookie-Pennsylvania
2018 Montana 305RL-2019-3500 Duramax-air bags
Sailun tires,2000 watt inverter, Trailer Saver Hitch
Cook-Den is offline   Reply With Quote
Old 06-10-2020, 11:41 AM   #46
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
is this something I need to look into... getting my 2020 reprogrammed. how do you know if you need to have it reprogrammed? is there somewhere to check the current version number and what the new release is?

Tony
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Old 06-10-2020, 11:47 AM   #47
432bartman
Seasoned Camper
 
432bartman's Avatar
 
Join Date: May 2020
Location: UPLAND
Posts: 74
M.O.C. #26190
Quote:
Originally Posted by Last2Die View Post
Question for those with the 2020 duramax. Just towed for the first time, and man this thing guzzles def. anyone experience this..?

Tony
Yes, the new one's do use more than the previous 2017-2019. I have 3000 miles on mine and I had to add 5 gallons of DEF. This seems to be the norm and it uses more when towing. I'm on the Diesel Place forum and others have stated the same on DEF usage in the new truck.
__________________
2019 Keystone Montana 3560RL
Truck: 2020 Chevy Silverado 2500 HD Duramax Diesel Upgrades: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch
USMC combat vet, & retired law enforcement 27+ years
432bartman is online now   Reply With Quote
Old 06-10-2020, 11:51 AM   #48
432bartman
Seasoned Camper
 
432bartman's Avatar
 
Join Date: May 2020
Location: UPLAND
Posts: 74
M.O.C. #26190
Quote:
Originally Posted by Last2Die View Post
Well this is the first time Iím taking the new truck out with the 5th wheel. I must say there is a difference from my 2015, the biggest being the 10 speed transmission. Itís darn near perfect. Heading to Las Vegas 15 north there are some pretty good hills, I was going 70-75. It is fun passing the gassers going up hill !! Lol. So far happy with the new truck !
The new Chevy/GMC diesels are flat out awesome. The Cajon Pass is a joke with the new 10 speed..........I normally tow at 65mph, so I don't get run off the road, but if I have to pass, this new truck just gets up and goes. Going out June 15th down to San Diego. I'm almost sad I have no good hills to tow up
__________________
2019 Keystone Montana 3560RL
Truck: 2020 Chevy Silverado 2500 HD Duramax Diesel Upgrades: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch
USMC combat vet, & retired law enforcement 27+ years
432bartman is online now   Reply With Quote
Old 06-10-2020, 05:42 PM   #49
triplebvalp
Seasoned Camper
 
triplebvalp's Avatar
 
Join Date: Apr 2020
Location: Panhandle of Florida
Posts: 53
M.O.C. #26098
Quote:
Originally Posted by Cook-Den View Post
I am scheduled to get my 2019 3500 reprogrammed, i was curious as to if you noticed any change to your truck after the upgrade. Let us know once you get some feedback.
Thanks in advance
Cook-Den, I had that TSB done a few weeks after it was announced. I noticed zero difference in the performance/DEF usage/fuel mileage.
__________________
2020 Montana High Country 295RL
10th Anniversary Edition
2019 Silverado 3500HD, Duramax, LTZ, SRW, CC, 4WD, 8'Bed
Reese M5 - 20K
triplebvalp is offline   Reply With Quote
Old 06-10-2020, 06:09 PM   #50
Cook-Den
Established Member
 
Join Date: Feb 2018
Location: johnstown
Posts: 34
M.O.C. #21280
Quote:
Originally Posted by Last2Die View Post
is this something I need to look into... getting my 2020 reprogrammed. how do you know if you need to have it reprogrammed? is there somewhere to check the current version number and what the new release is?

Tony
I got a call from the service manager at my dealership informing me i needed this done. If you call your service manager he will look up your VIN and let you know. actually any service manager can find this out with your VIN
__________________
Denny & Cookie-Pennsylvania
2018 Montana 305RL-2019-3500 Duramax-air bags
Sailun tires,2000 watt inverter, Trailer Saver Hitch
Cook-Den is offline   Reply With Quote
Old 06-10-2020, 07:36 PM   #51
432bartman
Seasoned Camper
 
432bartman's Avatar
 
Join Date: May 2020
Location: UPLAND
Posts: 74
M.O.C. #26190
Quote:
Originally Posted by Cook-Den View Post
I got a call from the service manager at my dealership informing me i needed this done. If you call your service manager he will look up your VIN and let you know. actually any service manager can find this out with your VIN
That's weird, cause my On-Star diagnostic report said there was nothing needing to be done on my truck and there are no updates needing to be done. I'll call the service manager in the morning.
__________________
2019 Keystone Montana 3560RL
Truck: 2020 Chevy Silverado 2500 HD Duramax Diesel Upgrades: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch
USMC combat vet, & retired law enforcement 27+ years
432bartman is online now   Reply With Quote
Old 06-10-2020, 07:50 PM   #52
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
https://tis2web.service.gm.com/tis2web/

looks like I have several... if this is correct

Tony
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Old 06-11-2020, 02:09 PM   #53
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
Called my GMC dealer today, I do have updates. The one update he mentioned was for the DEF and Regen cycles. He said the computer is using to much DEF and the regen cycles are too often and there is a software update to address these issues. Heading in first thing in the morning.

Tony
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Old 06-11-2020, 11:01 PM   #54
432bartman
Seasoned Camper
 
432bartman's Avatar
 
Join Date: May 2020
Location: UPLAND
Posts: 74
M.O.C. #26190
Quote:
Originally Posted by Last2Die View Post
Called my GMC dealer today, I do have updates. The one update he mentioned was for the DEF and Regen cycles. He said the computer is using to much DEF and the regen cycles are too often and there is a software update to address these issues. Heading in first thing in the morning.

Tony
Called the dealership I bought the truck from and there were (5) updates needing to be done. I attached what they did. The service rep said the truck was perfect and all the computer upgrades went as planned
Attached Images
File Type: jpg IMG-1895.jpg (256.9 KB, 6 views)
__________________
2019 Keystone Montana 3560RL
Truck: 2020 Chevy Silverado 2500 HD Duramax Diesel Upgrades: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch
USMC combat vet, & retired law enforcement 27+ years
432bartman is online now   Reply With Quote
Old 06-11-2020, 11:39 PM   #55
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
Pretty sure I saw the same thing when I ran the vin. Let you know tomorrow.
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Old 06-12-2020, 01:41 AM   #56
Sparatacus
Montana Fan
 
Join Date: May 2019
Location: Lakewood
Posts: 206
M.O.C. #24110
Nice setup.
__________________
2018 Dodge Ram 3500 6.7L Diesel CTD
2019 Jayco Eagle 321RSTS 5th Wheel
Retired Army MSG
Sparatacus is offline   Reply With Quote
Old 06-12-2020, 08:52 AM   #57
432bartman
Seasoned Camper
 
432bartman's Avatar
 
Join Date: May 2020
Location: UPLAND
Posts: 74
M.O.C. #26190
Quote:
Originally Posted by Last2Die View Post
Pretty sure I saw the same thing when I ran the vin. Let you know tomorrow.
What's funny is, the On Star diagnostic report you get every once in a while said everything was ok with my truck and nothing needed.....Glad I called the dealership and learned otherwise. Maybe that is the reason I never keep my On-Star after the initial purchase.
__________________
2019 Keystone Montana 3560RL
Truck: 2020 Chevy Silverado 2500 HD Duramax Diesel Upgrades: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch
USMC combat vet, & retired law enforcement 27+ years
432bartman is online now   Reply With Quote
Old 06-12-2020, 09:11 AM   #58
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
Quote:
Originally Posted by 432bartman View Post
What's funny is, the On Star diagnostic report you get every once in a while said everything was ok with my truck and nothing needed.....Glad I called the dealership and learned otherwise. Maybe that is the reason I never keep my On-Star after the initial purchase.
Yeah and if you go through the infotainment system it says everything is up to date, well on what can be updated over the air. One thing he did say or call this was a recall... you would think onstar would know about this if thatís actually how itís classified.
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Old 06-12-2020, 12:53 PM   #59
Last2Die
Montana Master
 
Join Date: Nov 2018
Location: Menifee
Posts: 810
M.O.C. #22986
Guess my truck was more up to date... just had the def update.. we will see how this is. He did note that this one just came out. I believe either yesterday or this morning.
__________________
2018 3920fb
2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover
2 HF 3500 Inverters with Parallel Kit
Last2Die is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 11:59 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×