RV.Net Open Roads Forum: Tow Vehicles: Limp Mode on LMM Duramax

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Help and Support  |  Contact

Search:   Advanced Search

Search only in Tow Vehicles

Open Roads Forum  >  Tow Vehicles

 > Limp Mode on LMM Duramax

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 5  
Prev  |  Next
Sponsored By:
sirdrakejr

Las Vegas, Nevada

Senior Member

Joined: 11/18/2001

View Profile



Good Sam RV Club Member

Offline
Posted: 05/19/12 10:54pm Link  |  Quote  |  Print  |  Notify Moderator

Moved from 5th wheels to tow vehicles.
Frank


2011 Palomino Maverick 1000SLLB on a 2004 Dodge Quadcab CTD Ram3500 SRW long bed equipped with Timbren springs, Stable Load bump stops, Rickson 19.5" wheels/"G" range tires and a Helwig "Big Wig" rear anti sway bar.


Kip81

utah

Full Member

Joined: 02/23/2011

View Profile


Offline
Posted: 05/20/12 09:21am Link  |  Quote  |  Print  |  Notify Moderator

Lov2hittheroad wrote:

Drive to work grab a second cup coffee and head to the spec and proving ground. This is the routine engineers do everyday at GM. Sometimes they don't catch items (recalls) but most of the time there on the ball. Where I'm going with this is millions are spent each model year tuning vehicles, matching transmissions to motors. They have the ok to snap crackle pop Motors & trans each & everyday. They push them to the max then back off to prevent warranty issues. These points are calibrated & set in the programs to flash to the pcm to be retained. If it was good for your $50,000 truck they would be installed from a manufacturing prospective. Cold air induction for an example, certainly would be oem by now its been an after market product for years & years an still have not made it in any autos. Its like pushing a race horse you might get away with it once, but your going to explode the poor animals heart some day...I read the forums all the time (crack crank shafts & blown trany's) & no one can say there getting better gas mileage with tuners, most get worse for they can't keep there foot out of the raging beast the tuner has turned the truck into. Really if you need a race horse, figure of speech...buy a Corvette. One awesome truck you own and I hope all works out for getting back to normality.
Blessings,


Yeah because engineers did such a great job with the injectors on the 01-04, or the overheating of the LLY, or the 6.0 PSD. Why have a $50,000 dollar truck and a $50,000 corvette when you can make your truck kick a corvettes ass for alot less then that and then hook up to your trailer and go home.

Cracked crank shaft? Really Once you get to around 600hp on a duramax your gonna need rods thats the week point no the the crank.

45Ricochet

North Idaho

Senior Member

Joined: 09/04/2009

View Profile



Posted: 05/20/12 10:10am Link  |  Quote  |  Print  |  Notify Moderator

What year truck Jim? There is a member here (killerbee) who most likely can help out your limp mode. X2 on more HP with the Allison, they seem not like it so much.


06 Ram 3500 CC LB Laramie 4x4 Dually 5.9 Cummins Smarty Jr 48RE Jacobs brake
GVWR 12,200 RAWR 9350
06 Grand Junction 34' High profile 15500 GVWR 3200 pin Mor/ryde 5500 Onan genny Dual A/C Wet bolts
27' Hallett 502, 500HP


JRP264

Boone

New Member

Joined: 09/15/2010

View Profile



Good Sam RV Club Member

Offline
Posted: 05/20/12 12:36pm Link  |  Quote  |  Print  |  Notify Moderator

The truck in questions is a 2008 2500 4WD Crew Cab pulling a Monte Vista 31.5 with a weight of around 10,000lbs. The truck as 55K on it, its been running for over a year with the Mini maxx set on Mild at all times with no trouble. I also have a 75gal acc. tank that I generally fill to about 50 gals. Gets service every 5000 with new fuel filter. It had gone over 1000 miles on this trip before the Limp mode problem, that didn't develope until we reach the Mountains. Reguardless of somes doughts, the chip does make a big difference in fuel use, I check it manually every two or three tanks, the trucks computer on fuel use is off several gal. When I figure out what causing the problem I will post the solution. I am going to upgrade the chip tomorrow, also will find out what GM tech has to say about the codes the service Mec. is sending them. The first thing I did when it went into Lemp Mode the first time was replace the fuel filter. I have been fueling from here to the keys and back, thought I may have pick-up some bad fuel.

racedaymechanic

Race City USA

New Member

Joined: 01/14/2012

View Profile



Good Sam RV Club Member


Posted: 05/20/12 08:52pm Link  |  Quote  |  Print  |  Notify Moderator

Kip81 wrote:

Lov2hittheroad wrote:

Drive to work grab a second cup coffee and head to the spec and proving ground. This is the routine engineers do everyday at GM. Sometimes they don't catch items (recalls) but most of the time there on the ball. Where I'm going with this is millions are spent each model year tuning vehicles, matching transmissions to motors. They have the ok to snap crackle pop Motors & trans each & everyday. They push them to the max then back off to prevent warranty issues. These points are calibrated & set in the programs to flash to the pcm to be retained. If it was good for your $50,000 truck they would be installed from a manufacturing prospective. Cold air induction for an example, certainly would be oem by now its been an after market product for years & years an still have not made it in any autos. Its like pushing a race horse you might get away with it once, but your going to explode the poor animals heart some day...I read the forums all the time (crack crank shafts & blown trany's) & no one can say there getting better gas mileage with tuners, most get worse for they can't keep there foot out of the raging beast the tuner has turned the truck into. Really if you need a race horse, figure of speech...buy a Corvette. One awesome truck you own and I hope all works out for getting back to normality.
Blessings,


Yeah because engineers did such a great job with the injectors on the 01-04, or the overheating of the LLY, or the 6.0 PSD. Why have a $50,000 dollar truck and a $50,000 corvette when you can make your truck kick a corvettes ass for alot less then that and then hook up to your trailer and go home.

Cracked crank shaft? Really Once you get to around 600hp on a duramax your gonna need rods thats the week point no the the crank.
You must have some slow Corvettes where you live


2009 Sabre Palomino "Sissy"
1998 Chevrolet K3500 6.5 Diesel "Brutus"
ptwiringsolutions.com


N8GS

West Michigan

Senior Member

Joined: 04/24/2006

View Profile



Good Sam RV Club Member

Offline
Posted: 05/21/12 05:31am Link  |  Quote  |  Print  |  Notify Moderator

I have an 09' GMC DuraMax and with the FW I gross at 18,000# +/-. I can spin the tires when I take off from a stoplight. Why would I need more power?
Now to get serious, this winter I made the trip from Grand Rapids, MI to Yuma, AZ and back, ran 65 mph both ways all the way but slightly different routes. 11.07 mpg going west and 12.1 mpg going east. Average for the trip 11.54 mpg all data entered into excel spreadsheet. Running empty (same sppeed) I can expect 20mpg in cold weather and 21 to 22 in warm weather.
Gale


Ham radio 73's from Gale N8GS
2009 GMC 2500HD Ext cab, LB 4x4 Duramax
2006 Cougar 290EFS (RK) Axle wt 8200#, Pin wt 1760#
B&W companion
2 Honda EU2000i IOTA DLS90 converter
4-Trojan T1275's(600Ah)+470W of solar w/ Outback FM-60 CC
Samlex 2000w PSW inverter

JIMNLIN

out here

Senior Member

Joined: 09/14/2003

View Profile



Posted: 05/21/12 06:38am Link  |  Quote  |  Print  |  Notify Moderator

My sons '02 Dmax/A goes into limp mode due to his oversize tires when he pulls his 5th wheel trailer especially when pushing hard.
He installed a adjustable programmer with the boost/EGT/etc. No more limp mode when pushing hard.


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 gvwr two slides

pressure_welder

brandon

Full Member

Joined: 02/05/2012

View Profile


Offline
Posted: 05/21/12 07:15am Link  |  Quote  |  Print  |  Notify Moderator

my previous truck to my 2012 denali dually was a fully modified lifted/chipped/built motor/trans 2004 duramax. The allisons are great transmissions and they are tough but ARENT made to hold the extra power. Their by far the strongest transmission on the market. If your adding anything over 100HP your seriously looking for trouble, even at a 100HP tune id be seriously babying the 4-5 or 5-6 shift. Once you slip the transmission it gets easier and easier to do so until eventually itll start slipping with no tune and your forking out huge money for a new clutch pack. I hate to be the barer of bad news but if you slipped her repeatedly youve cooked your clutch pack. Trust me i know the thrill of having a tuned truck, i ran 900HP and it was fun! but i also eliminated every weak link to do that. You seriously shouldnt even need to chip these new trucks. Thats the main reason i got rid of that duramax was for more reliability. If your looking at still running a tuner, i would seriously recommend replacing your clutch pack with NADP, ATS, or suncoast parts. AND getting a transgo JR to up your line pressures to make your shifts firmer. These tuners have the software to automatically change your shift patterns and make them stiffer BUT your line pressures arent high enough to properly account for the new software telling your transmission to shift firmer. THe transgo kit comes with me pistons/valves that help this. Again i try and tell everyone that says... i want to throw a new turbo on.... put a 200HP tune on my truck, bigger tires whichever... its ALL about eliminating the weakest link. Unfortunately its not entirely about plug and play if you want to maintain reliability.


2012 Duramax Denali Dually
2003 Triple E topaz 29' luxury touring edition.
1850 crestliner sportfish w/ 150 optimax

texas_train

Great State Of Texas!

Senior Member

Joined: 12/29/2009

View Profile



Good Sam RV Club Member


Posted: 05/21/12 06:15pm Link  |  Quote  |  Print  |  Notify Moderator

greende wrote:

Ranger Smith wrote:

downtheroad wrote:

Welcome to the Forum...your first post.
Please don't take this the wrong way, but I have always felt that if you "chip," you will eventually pay the price.

My advice, pull the chip.
Others, of course, have a different opinion.


X2


X3 and I have a D-Max


x4 New dmax has almost 400 HP and a whopping 800 ft lbs of torque
(OK its like 397 and 795.... still) ?!?!?!?!
My last trade (I don't want to get into any snits here but, ) was a PSD OK in fairness it was two generations ago 6.0 litre "04" (crew/long/PSD/stock 350)but my new stock dmax will walk off and leave it behind, with a much heavier load. I am sure they "all three" have much more now with R and D and programming. As was said earlier the mfgr's put a lot of testing in them and have them tuned just about as far as they can go and still have the longevity they need to be a good viable TV Just my humble opinion!


2012 Cedar Creek 36 RE Touring ED, all avail options
2011 GMC 2500 HD Denali DMax 4wd Superglide firestone bags
95' Procraft V-180-C 120HP OB, 80# cust TM, side/down image sonar
Don and Rosie, Annie the wonder Dog
clicky to our photobook album


Perrysburg Dodgeboy

Perrysburg, Ohio USA

Senior Member

Joined: 12/06/2003

View Profile



Posted: 05/21/12 06:38pm Link  |  Quote  |  Print  |  Notify Moderator

Lov2hittheroad wrote:

Cold air induction for an example, certainly would be oem by now its been an after market product for years & years an still have not made it in any autos.


Say what Well maybe not ordered from the factory but you most certainly can from Mopar Performance and retain your full Chrysler factory warranty too boot. I would bet you can from GM's performance parts arm also Ford has them.

Don


Perrysburg Dodgeboy
2004 Dodge Ram 2500 Quad Cab SLT Cummins HO
2005 Keystone Cougar 304 BHS

Chrysler the only one to pay back 100% of their loans from the Government. *The Old Car Company" still owes 1.6 billion. Is that better Chuckles

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 5  
Prev  |  Next

Open Roads Forum  >  Tow Vehicles

 > Limp Mode on LMM Duramax
Search:   Advanced Search

Search only in Tow Vehicles


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2013 RV.Net | Terms & Conditions | PRIVACY POLICY | YOUR PRIVACY RIGHTS