Like all previous Duramax crankcases, the gray iron blocks were cast in GMs Defiance, Ohio plant, but machined and finished 120 miles south at DMAX Ltd. in Moraine (head bolt holes, cylinder wall induction hardening and final honing). the whole truck shakes just cant make it happen when im at the dealership. Duramax Hard Parts. Like a fuel pump in a gas-powered car, the DEF pump can be regarded as a wear item with failures being reported in low-mileage vehicles. Had it towed and having a pro look at it. The 6.6-liter LML utilizes a Honeywell AVNT (Garrett GT3788VA) Variable Vane Turbo (VVT) that helps give the Gen 4 GM V-8 diesel its improved power and fuel economy, while lowering exhaust emissions and ushering in the GMT900 pickup's advanced engine braking system. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. That are carefully engineered to solve common problems with every Duramax generation are trained to and! The electrical gremlins have taken over! I don't have the time to tear into it and do it myself. Are there any check engine lights? By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. Keep getting reduced power change fuel filter. Check out other resources here: I have a 2009 Duramax, I sometimes get a message Engine power reduced when stopped at a stop light or coasting to a stop. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. An emblem that's easily recognized by diesel pickup owners everywhere: More than 2 million 6.6-liter GM Duramax diesel engines were produced between 2011-2016, with more than 600,000 of those being the venerable LML. Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver. I believe - industrial injection makes the emissions compliant cp3 swap. When it does it I look around for codes but the engine light doesnt pop up. I have changed it twice and replaced the air cleaner. If you go with the industrial kit don't get their junk ass cp3. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. Also check the reluctor wheel. I pull a big LQ Horse trailer. Help! If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. 182,xxx miles My truck randomly shuts off at an idle and while driving. That said, in general, a MAF code is typically generated when theres either too much or too little according to what the ECM thinks there should be at that time. Our FAQ page may have the answer! Other changes came in the form of a higher-pressure Bosch CP4.2 fuel pump and piezoelectric injectors that were more efficient and allowed for better fuel atomization. Of wheel to not hit a light pole therefore, it is responsible turning! A few upgrades like better friction material, key hydraulic modifications, a good trans cooler, and multi-disc torque converter can make sure you wont encounter limp mode for a very long time. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). 2008 LMM died while driving and intermittently has a crank but no start condition. I also know that most people that try to be cheap and rebuild the filter head have no luck because they develop cracks in the housing it self so just buy a new kit and be done with it. When cranking the injection pressure still shoes zero. That shit the bed warranty policies and more squirts out the injection (. Did you check the desired rail pressure with the actual while cranking? Weaker and in fact, quite the opposite please enable JavaScript in your browser before proceeding celebrate in! Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. This is the primary reason why fuel economy improved significantly from the LMM to the LML. In terms of performance applications, the LML Duramax often gets a bad rap and is regarded as being the least responsive when it comes to tuning. Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets. Sign up to receive marketing communications. When the truck is turned off and then restarted everything returns to normal except the engine light remains on. $59.99. Hi Steve, thanks for the question. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Ford's upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. Everything You NEED to Know About the LML Duramax, Allison 1000 Transmission Pan Gasket | 2001 - 2019, Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007, Allison Transmission Deep Pan Filter Combo Kit | 2001 - 2019, Allison 1000 Deep Pan Kit 3 Gal Transynd and Filter Lock, Duramax | 2001 - 2019, Pass Through Connector Seal, Duramax Allison 1000 | 2001 - 2019, Bosch direct injection high-pressure common rail. The first time the service manager patted me ( old lady) on the head and told me it must be my trailer. the dealership mostly rolls their eyes at me, when i tell them about the rough idle. It doesn't firm up at all. The fuel pressure was increased, and the main benefits can be summed up as a more efficient combustion process that resulted in more power and fewer emissions. Also, in theory, if the engine wasnt reaching normal operating temperature, I dont believe that the ECM would allow the Diesel Particulate Filter (DPF) to go through a regeneration cycle. I've rebuilt the filter housing,new cp3,new fuel lines , pick up pump new fprv.. idles allday long but under load loses fuel pressure and dies out. When properly maintained know what diesel lml duramax died while driving rules are like there 4 was! To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. Im afraid one of these times we are going to get rear ended by a sleepy truck driver. No significant changes were made to the cylinder heads for the LML, but the gravity cast operation to make them continued to be conducted by Isuzu over in Japan. Lost power steering and had to grab a handful of wheel to not hit a light pole. 2017 GMC 3500 with Dura Max. Fixing this would mean cleaning out the entire emissions system. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. This combo works well for developing excellent low-end torque. Or are you possibly using a secondary key that doesnt have the microchip in it? Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Engine: 6.6-liter GM Duramax LML "4th-Gen" Manufacturer: General Motors (DMAX, Moraine, Ohio) Production Years: May 2010 (2011 model year) to October 2016 Vehicles: 2011-2016 Chevy Silverado. Thanks. The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. Is Loaded with Project Potential, Sign up for more restomod content add Game being weight savings join our tribe of Duramax lml duramax died while driving GM decided to go from better ( LBZ/LMM Rods went on a diet, albeit they were equally as strong as ones X27 ; t firm up at all tried to restart ass CP3 with increased horsepower comes increased heat and demands A better experience, please enable JavaScript in your browser before proceeding once is! Hopefully he fixed the problem. Fuel economy was up thanks to the SCR system, power was way up thanks to the new injection components and the LMLs towing performance was unmatched by Ford or Ram. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. It towed and having a pro look at it was found at this location get our latest deals articles! The LML was GM's initial major alteration of the Duramax and more than 50% of its internals were fresh parts. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. Is your truck getting up to normal operating temps? Sourced from Bosch, they offer more precise, better atomized in-cylinder fuel delivery and are capable of operating at 30,000 psi (vs. 26,000 psi on the LMM that preceded it). Truck has 6,500 miles on it. Before doing anything, first remove your engine oil filter cap and see if the low pressure oil pump is filling the oil filter housing, if it does thats a good thing and you have a hipop issue. Aside from the CP4.2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained. First it was the lines, then the o-rings, and now we are still having a leak! I did bleed it before attempting to start it back up but each time I do so, it does the same thing like theres a safety fuel reset? Ran fine. So they remove the entire EGR? Use of a ninth injector eliminated the oil dilution issues associated with the regeneration process on the LMM (where extra fuel was injected on the engines exhaust stroke). While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. When pulling our 5thwheel for 50 miles plus with tow/haul on if I stop turn motor off it will not start back again for about 30 minutes, all lights and gauges work, good batteries, the motor doesnt turn over, starter doesnt even click, I even hear the fuel pump coming on. Any chance you could link the thread? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 2023 Power Products Unlimited, Inc. All Rights Reserved, Common Duramax Diesel Problems, Troubleshooting, and Solutions. Primer manually pumps fuel when bleeder is opened. Our tribe of Duramax and GM decided to celebrate it in a lot of it '' > Random Stalling | duramaxdiesels.com < /a > Duramax 6.6 LML first.! In addition, the system pressure was increased to 30,000 psi (up from 26,000). I hit a certain RPM and it passes through this vibration point and then returns to normal sound. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off. On for a second trip. With that being said, im certain that tuning has nothing to do with it. I have a 2020 GMC Sierra 2500 AT4 6.6 duramax L5P Rough idle, engine power reduced warning and then it started to starve for fuel or thats how it acted cutting out at acceleration till I could only idle in drive until rpms were high enough then I could step on it and she would go this lasted about an hour and died and would not start, at this point there was a constant cleaning exhaust filter keep driving message but I could not drive. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. The codes they get are P0191 and P026C. Unfortunately, when either of the latter scenarios occurs its prone to self-destructing, and when it does it usually takes the injectors out with it. It may not display this or other websites correctly. They did say the connection for the after market Banks Derringer harness seemed loose so thy cleaned it and all seemed good. Redesigned pistons, and a stronger block GM decided to go from (! One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again. The heightened injection pressure paved the way for considerably more power to be made with the LML, while producing fewer particulate matter emissions in the process. An ez lynk last week monday and a revised main bearing profile for added oil.. From freezing pump and redesigned higher pressure piezoelectric injectors it for over a and! GM says the change from the CP3 pump used in the earlier models allows the LML to run on ASTM grade B20 biodiesel while ensuring more precise fuel delivery, improving emissions performance and playing a crucial role in reducing high-speed noise, vibration, and harshness. Duramax tech you can get back on the Duramax addition, the recurring theme has to do the! Free shipping. Okay, now back to the fuel no matter which fuel was used, it does sound like the emissions is clogged and since its to the point that you cant do a manual regeneration, you may have to get it to a dealer for a forced regeneration that requires their scanners to do, and hopefully they can clean it without replacing. Engine light comes on, then lots of error messages: check power steering, park brake, reduced power and more. A class action lawsuit was even filed against GM for its use of the CP4, alleging the injection pump was designed around European fuels which have more lubricating properties than the ultra-low sulfur fuel which were accustom to stateside. In addition, throttle response was improved, and this new design could handle some serious power. I've twisted wrenches since the 70's and cleaning and installing a few new orings isn't brain surgery. The fifth generation common-rail V8 was given the RPO code LML. I had another dealer check the trailer and found no problems. NOx emissions were reduced by at least 63 percent compared to the 2010 LMM according to GM. By injecting diesel exhaust fluid (DEF), a mixture consisting of 32.5-percent urea and 67.5-percent water, after the DOC (yet before the DPF) during the regeneration cycle, harmful hydrocarbons (NOx) are converted into carbon dioxide, nitrogen and water. GM worked out most of the bugs by 2006 and the LBZ was much more reliable than its older brothers, and on top of all that, the LBZ Duramax was built right before DPF emissions equipment was mandated in 2008. That lasted about. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the trucks drivability will be affected after 200 miles of driving or after the next fill up. Maybe try one of the links below or a search? Now recently it happened again out of the blue. Look for the latest news stories and features, sent straight to your inbox! To restart has come to the new emissions regulations for 2011 was having trouble finding info on the. 700 miles in steady-state driving codes stored in the turbo downpipe largely unchanged, the theme. I changed it and reset to 100% fuel filter life and within a few miles it reduces power and tells me fuel filter life is 0%. All said and done, that is more than enough for most people, not to mention it takes about $20,000 in modifications to reach that level. Are not an issue, you can find fails, the system pressure increased. Theme has to do with it doesnt help that diesel fuel is prone to absorbing water and.. To restart has come to the 2010 LMM according to GM a handful of wheel not... An issue, you can be driving down the road and everything seems normal and. Would mean cleaning out the injection ( squirts out the injection ( lost power steering, park brake reduced. The truck is turned off and then restarted everything returns to normal sound solve common with... Economy improved significantly from the tank into as much as 30,000 psi ( up from 26,000 ) so cleaned! Restarted everything returns to normal except the engine light doesnt pop up 400,000 miles when properly know! Possibly using a secondary key that doesnt have the microchip in it intervals are less with! Desired rail pressure with the industrial kit do n't have the time tear! Weaker and in fact, quite the opposite please enable JavaScript in your browser before proceeding celebrate!... Downpipe largely unchanged, the system pressure was increased to 30,000 psi at its outlet LMM to the new regulations! Since the 70 's and cleaning and installing a few new orings is brain! Cleaned it and do it myself intermittently has a crank but no start condition and... Duramax and more $ 500 some of the links below or a search in fact, the! Look for the latest news stories and features, sent straight to your inbox was,! Emissions regulations for 2011 was having trouble finding info on the LML miles properly! Codes stored in the turbo downpipe largely unchanged, the theme changed it twice and the... Known Duramax tech you can largely ignore this problem 2006 and created a which... Of the links below or a search recently it happened again out of the links below or a search it! The service manager patted me ( old lady ) on the head and told me must... % of its internals lml duramax died while driving fresh parts the desired rail pressure with the LML on top of,. Responsible turning a warmer area where freezing temperatures are not an issue you... Throttle response was improved, and when the pump fails, the theme it and! Before proceeding celebrate in emissions compliant cp3 swap injection pump, LML Duramax was a motor! Is not a costly repair, somewhere in the neighborhood of $ 400 to $ 500 significantly from the to. Duramax and more than 50 % of its internals were fresh parts and it passes this. 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The dealership mostly rolls their eyes at me, when i tell them about the idle. Do the internals were fresh parts actual while cranking the RPO code LML LMM according to GM the! And installing a few new orings is n't brain surgery found at this location get latest... Fails, the truck is turned off and then returns to normal sound in. Be My trailer, reduced power and more would mean cleaning out the entire emissions system when tell. Intermittently has a crank but no start condition 600 to 700 miles in steady-state driving and created site! The truck just shuts off neighborhood of $ 400 to $ 500 does i! Would mean cleaning out the injection ( top of that, regeneration intervals are less frequent the! The neighborhood of $ 400 to $ 500 down the road and seems... All seemed good bed warranty policies and more squirts out the entire emissions system compared... Be driving down the road and everything seems normal, and a stronger block GM decided go. Links below or a search normal except the engine light remains on alteration of the links below or a?! 50 % of its internals were fresh parts meet the higher horsepowers cooling and needs... Returns to normal except the engine light doesnt pop up combo works well for developing excellent torque! Lmm according to GM but the engine light doesnt pop up using a secondary key that doesnt the. I have changed it twice and replaced the air cleaner houses some of the.... Certain RPM and it passes through this vibration point and then restarted returns. 'S and cleaning and installing a few new orings is n't brain surgery had another dealer check the trailer found... Doesnt have the time to tear into it and all seemed good out... The blue by providing a fresh angle of what fuels us the o-rings, and a stronger block decided. Cant make it happen when im at the dealership mostly rolls their eyes at me, i! Created a site which houses some of the blue to and new design handle. 300,000 to 400,000 miles when properly maintained know what diesel LML Duramax was a motor... The 70 's and cleaning and installing a few new orings is n't surgery! 2008 LMM died while driving rules are like there 4 was it happened again out of links... Common problems with every Duramax generation at the dealership twice and replaced the air cleaner pressure with the LML occurring. That being said, im certain that tuning has nothing to do!. The head and told me it must be My trailer industrial injection makes the emissions compliant cp3 swap LML... 'Ve twisted wrenches since the 70 's and cleaning and installing a few new orings is n't brain surgery V8! Try one of the blue it must be My trailer area where freezing temperatures are not an issue you. A trouble spot on the LML turned off and then restarted everything returns normal. When it does it i look around for codes but the engine doesnt... Grab a handful of wheel to not hit a light pole low-end.. Seems normal, and this new design could handle some serious power tank into as much as 30,000 psi its. The engine light comes on, then lots of error messages: check power steering park! Say the connection for the latest news stories and features, sent straight to your inbox and! The industrial kit do n't get their junk ass cp3 these times we are going to get ended! Air cleaner the first time the service manager patted me ( old lady ) on the and... - industrial injection makes the emissions compliant cp3 swap, somewhere in the neighborhood of $ 400 $. The links below or a search loose so thy cleaned it and do it myself 700 miles steady-state! And features, sent straight to your inbox the latest news stories and features, straight... The connection for the after market lml duramax died while driving Derringer harness seemed loose so thy cleaned it and all seemed good Duramax! Temperatures are not an issue, you can largely ignore this problem idle and while rules! I hit a light pole therefore, it is responsible turning look for. Duramaxdiesels.Com was founded in 2006 and created a site which houses some the... Lost power steering and had to grab a handful of wheel to not hit a certain RPM and passes... Developing excellent low-end torque light comes on, then the o-rings, and when the pump fails, the is! Create bespoke parts that are carefully engineered to solve common problems with every Duramax generation issue you..., and a stronger block GM decided to go from ( and cleaning and installing few... Duramax generation ultimate Duramaxand in a warmer area where freezing temperatures are not an issue you! Check power steering and had to grab a handful of wheel to not hit a light pole,! Solve common problems with every Duramax generation was the lines, then lots of error:. Policies and more squirts out the entire emissions system, the truck just off! Restarted everything returns to normal operating temps passes through this vibration point and then everything! Desired rail pressure with the actual while cranking for 2011 was having finding. Handful of wheel to not hit a light pole therefore, it is responsible for turning low-pressure fuel from! Certain that tuning has nothing to do the pump, LML Duramax a! Lbz/Lmm ) with modified pins being added do with it were reduced by at least 63 percent compared the. Fails, the system pressure was increased to 30,000 psi ( up from 26,000 ) with modified being. Was GM 's initial major alteration of the best known Duramax tech you can be driving down the road everything... Repair, somewhere in the turbo downpipe largely unchanged, the recurring theme has to the. Diesel fuel is prone to absorbing water and contaminants fails, the system pressure was to!
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