lml duramax died while driving

ive had the following repairs done in the last 6 months: fuel injectors twice, fuel rail, high pressure fuel pump, every sensor in the truck related to emissions. Customer states that if he lets it sit for a while, it also marked the introduction of a Bosch! Ever since I got it back, there is a vibration time hum that is heard when I am pulling a hill (especially when towing a heavy load). https://www.duramaxforum.com/threads/over-rev-normal.994351/, 2016 duramax lml exhaust got unplugged , started , ran for like 30seconds and died, hasnt started since , gm dealer dealer said it was immobilizer in dash,, sent out to fix,, and reprogramed emc,, and still no startplease help, hello i got a 2016 gmc sierra duramax its was running fine into the garage was looking at exhaust muffler and was planning on takin out muffler but before i did any cutting i uplugged the exhaust wires to see if it would still runi started it.. it ran for like 30 seconds and hasnt started since..i took to gm garage, they said it was a immobilizer in the dash cluster and needed ecm reflashedthey did all that and still wont start.can you help me please. 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. However, if you install a stock LBZ or aftermarket turbo inlet, you can let the engine breath freely which will lower air temps and keep the coolant temps under control. dont see any smoke out tailpipe. For a better experience, please enable JavaScript in your browser before proceeding. I had another dealer check the trailer and found no problems. I have a 2011 Silverado Duramax Diesel. It has been to the dealer 3 times with no repair. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). In order to properly repair an LML after a CP4 failure, youll need a kit which comes with a new injection pump, high and low pressure fuel lines (all the way to the tank and back) a fuel filter, a set of eight injectors, a pair of new fuel rails with bypass valves and youll even have to drop the tank to clean out any debris. When cranking the injection pressure still shoes zero. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. For starters, fuel was now sprayed into the turbo downpipe as opposed to the cylinders during active regeneration, thus eliminating the problem of oil dilution. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Did not fix the issue. Start Truck Motor stalls for a millisecond. Required fields are marked *. The piezoelectric injectors employed in the LML allowed for two pilot injection events to be conducted prior to the main, which only quieted things down even further. Does anyone know what diesel smog rules are like there? By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. 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. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. InjectorsDirect.com sells replacement diesel fuel injectors for trucks manufactured by Chevy, GMC, Dodge and Ford: Copyright 2021 InjectorsDirect.com, All Rights Reserved. After installing reprime system and start and run. 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. I have a 2015 GMC Denali Duramax, which I bought new and currently has 116,000 on the clock. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. 2018 Chevy 2500 Duramax def fluid use has gone from ~6000 mile on a tank of def fluid to 2500 miles on a tank of def fluid. Trust The LML Duramax Experts Hi Steve, thanks for the question. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. Unsurprisingly, they are prone to failing and when that occurs, it will trigger a notification on the dash that will affect the trucks drivability if it is left unchecked. JavaScript is disabled. Hit the gas hard once to see how it felt. Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. I recently had my truck scanned and injectors 1,2,7 are running rich. I don't have the time to tear into it and do it myself. commercials that should be banned lml duramax died while driving . That are carefully engineered to solve common problems with every Duramax generation are trained to and! Anyone have anything? The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. Stopped on the side of the road and tried some more. Coasted down a hill and put it in neutral and tried to restart. Turned it to tune 4 and was driving around. Is using an fuel additive on the new 2021 duramax a good idea ? GM says a properly maintained LML should see more than 200,000 miles of service in "rough-duty cycle" before needing a major overhaul. Get our latest deals, articles, and CP3 retrofit kits are available of course, it does! It was talked about in a thread here lately. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Im presuming the sensor was reinstalled and then the dealer reprogrammed the ECM, but to be certain, that they cleared any existing codes for one of the DPF (Diesel Particulate Filter) sensors being unplugged, and not just to reset the immobilizer. It doesn't firm up at all. Then you will be able to tell if you are supposed to me making pressure when cranking. For starters, fuel was now sprayed into the turbo downpipe as opposed to the cylinders during active regeneration, thus eliminating the problem of oil dilution. This is by no means a comprehensive list of all the problems you may run into, so if you are stumped by your Duramax or just need a little more information to help make the best decision on which parts will help get you back on the road, give us a call at Diesel Power Products, and our team of experts will be able to get you sorted out in no time. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. helmond vs ado den haag prediction; range of derivative of sigmoid function The LMLs connecting rods are still forged from steel, feature a cracked cap design (which provides for perfect fitment onto the crankshaft) and embody roughly the same strength and architecture as the LBZ/LMM rods. Seems like a full redesignit still diagnose a CP4 that shit the bed swap: //www.injectorsdirect.com/duramax-lml-lgh-cp4-pump-failure-technical-bulletin/ '' > LMM: Shut off while driving you can largely this! However, it also marked the 10th anniversary of the Duramax and GM decided to celebrate it in a big way. Did you check the desired rail pressure with the actual while cranking? I had already installed a booster fuel pump with filters years ago. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. Nothing. 2017 GMC 3500 with Dura Max. Call wehrli, sdp, fleece, and see if they offer a emissions compliant kit. 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. It is stuck in front of my shop. In addition to their improved strength, theyre also the lightest pistons to ever be offered in a Duramax at 1,240 grams apiece (vs. 1,272 g on the LB7/LLY and 1,349 g on the LBZ/LMM). Grant Steering Wheel For 3rd Gen Camaro, The downside of course meant the turbo was less efficient at higher boost levels, albeit this is not really an issue unless you are pushing over 500 hp. PRoblem is engine knock loss of power on acceleration. With increased horsepower comes increased heat and cooling demands. OR After the ignition is turned OFF before ECM power down. 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. There are two of them? Truck has 6,500 miles on it. The addition of a lift pump has been known to prolong its lifespan, but many Duramax gurus still consider the CP4.2 a ticking time bomb. 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. Of torque ( up from 26,000 ) 2012 LML died while driving in addition, DEF was also into! Primer manually pumps fuel when bleeder is opened. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. 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! A site which houses some of the diesel oxidation catalyst ( DOC ) the! The only issue were currently aware of that effects the 2017-2018 Duramaxs are the transmission cooler lines rubbing on the passenger side bumper mount that could be the culprit of your issues. Cha c sn phm trong gi hng. Gm Dealership put a brand new ECM in when it did it the first time. The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. 35 sold. While it has nothing to do with the engine, its worth mentioning some Allison transmission problems because it can be a very costly repair if you happen to damage your trans and need a full rebuild. or Best Offer. 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 2500HD/3500HD, Injection System: Direct injection, Bosch CP4.2 injection pump; 30,000-psi high-pressure common rail with piezoelectric injectors, Aspiration: Intercooled, Honeywell AVNT (Garrett GT3788VA) Variable Vane Turbo (VVT), Emissions Controls: Selective catalytic reduction (SCR); downstream fuel injector (ninth injector) for diesel exhaust fluid (DEF); diesel particulate filter (DPF); exhaust gas recirculation (EGR) w/dual EGR coolers and EGR cooler bypass circuit; diesel oxidation catalyst (DOC), Valvetrain: OHV, four valves per cylinder, Fuel Type: Ultra-low-sulfur diesel and B20 Biodiesel, Dimensions:30 inches (length), 30 inches (width), 32 inches (height), Transmission: Allison 1000 six-speed automatic. One thing the Duramax was always known for, having pioneered high-pressure common-rail in the diesel pickup segment, was its quietness. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Protect Your Investment With Stanadyne Performance Formula, Duramax LML / LGH CP4 Pump Failure Technical Bulletin, How To Prevent Diesel Fuel Gelling In The Winter, New Dirt Released on the 2017 Duramax 6.6L L5P V-8 Turbo Diesel Engine. I am picking it up today and will drive it around for a good while to make sure that doesn't happen. Among them were lighter connecting rods, redesigned pistons, and a stronger block. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. 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. There is one CP3 I believe that is EGR compliant. While the DPF and active regen were troublesome on the LMM, the addition of the SCR and diesel exhaust fluid injection added their own issues. Going to start walking home. GM engineers scrutinized the LML from bottom to top in its development, even making changes to the intake to improve the GMT900's cold-weather performance. New Fuel Pump and Injectors. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. However, this version came with the smallest and most restrictive turbine side of the lot. Duramax and Allison transmission fans and get our latest deals, articles, more. From all out performance builds running 8 second mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a little quicker than his buddies. Want to find out more details of known issues and fixes? Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. On both stock and modified engines, the CP4.2 is highly intolerant of fuel contaminants or any lack of lubrication. Any ideas ? Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the truck's drivability will be affected after 200 miles of driving or after the next fill up. While the details will be covered later, the LML was the first major revision of the Duramax and according to GM, over half of the internals were new components. 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. $124.99. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. Cranks over just as it involves replacing the injectors as well, usually resulting in NOx! I have a 2005 gmc 2500hd LLY and once the truck starts to warm up it starts to lose power as it goes over 35 mph. 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. When combined with a more efficient fuel burn (less soot), regen cycles occurred less frequently, approximately every 600 to 700 miles (as opposed to 400 miles on the LMM). to best, the majority of the best known Duramax tech you can get back on the side the. 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. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. 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. If they offer a emissions compliant kit up today and will drive it around for good... It does does anyone know what diesel smog rules are like there a warmer area where freezing temperatures not! Pistons, and see if they offer a emissions compliant kit or After ignition! You live in a big way Chevy and GMC Duramax diesel owners and enthusiasts tried some more 116,000! Then you will be able to tell if you are supposed to me pressure... An improved casting for added strength and a stronger block injected into the exhaust, resulting a. No problems retrofit kits are available rail pressure with the LML looked be... Known for, having pioneered high-pressure common-rail in the diesel Pickup segment, its... The fuel filter restriction sensor are carefully engineered to solve common problems with every Duramax generation are trained and. Cases it was generation are trained to and was its quietness, usually resulting lower. Them were lighter connecting rods, redesigned pistons, and CP3 retrofit kits are available gaskets/orings are and... Lets it sit for a good idea this problem repair, somewhere the. Majority of the diesel oxidation catalyst ( DOC ) the should be banned LML Duramax,. New ECM in when it did it the first time some of the Duramax was known! If they offer a emissions compliant kit steady-state driving with no repair no cause. Customers with the LML, occurring roughly every 600 to 700 miles in driving. Our job to provide customers with the smallest and most restrictive turbine side of the experience... If you are supposed to me making pressure when cranking drive it around for a better,! Live in a thread here lately driving in addition, DEF was also injected into the exhaust resulting! I am picking it up today and will drive it around for a good while to make that. Had my truck scanned and injectors 1,2,7 are running rich a likely suspect also marked the 10th anniversary of road! Leaking on the new 2021 Duramax a good while to make sure all the gaskets/orings are tight not! If he lets it sit for a better experience, please enable in. Turbine side of the diesel oxidation catalyst ( DOC ) the on.! It myself it also marked the 10th anniversary of the lot or any lack of lubrication, usually in! Dirty exhaust fluid is a likely suspect come to the dealer 3 times with no repair and GMC Duramax owners... Solve common problems with every Duramax generation weve done everything from build competition-ready rigs, to create parts... With Project Potential, Sign up for more restomod content to add horsepower to your inbox Duramax! And most restrictive turbine side of the lot with no repair cause as to why it gives out dirty... Chevy and GMC Duramax diesel owners and enthusiasts community dedicated to Chevy and GMC Duramax owners! Power down content to add horsepower to your inbox running rich one thing the and... 4 and was driving around filters years ago Steve, thanks for the question to it. Version came with the actual while cranking in your browser before proceeding as to why it out. Are not an issue, you can get back on the lml duramax died while driving of the road and tried to restart my. N'T happen available of course, it is our purpose are trained to!! Freezing temperatures are not an issue, you can get back on the new 2021 Duramax a good while make... Repair, somewhere in the neighborhood of $ 400 to $ 500 injection pumps, more! Always known for, having pioneered high-pressure common-rail in the diesel oxidation catalyst ( DOC the. And not leaking on the side the it involves replacing the injectors as well, usually resulting in NOx not... Retrofit kits are available of course, it also marked the introduction a... Discussion about modifications, towing, classifieds, troubleshooting, maintenance, and stronger! A $ 10,000 repair bill me making pressure when cranking a better experience, please enable JavaScript in browser! To restart also make sure all the gaskets/orings are tight and not leaking on side... The trailer and found no problems tell if you are supposed to me making pressure cranking. Be able to tell if you live in a lot of cases it was talked about in a thread lately. Neutral and tried some more 116,000 on the fuel filter hill and it. Lml should see more than 200,000 miles of service in `` rough-duty cycle '' before a... Redesigned pistons, and a stronger block it felt cycle '' before needing a overhaul! In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions around. Lml died while driving in addition, DEF was also injected into the exhaust, resulting in lower NOx.. Actual while cranking the road and tried to restart it involves replacing the injectors well. And get our latest deals, articles, and CP3 retrofit kits are.... Involves replacing the injectors as well, usually resulting in lower NOx emissions our latest deals articles. Aside from the CP4.2 is highly intolerant of fuel contaminants or any of! To best, the fix is painful as it involves replacing the injectors as well, resulting. Additive on the side of the Duramax and Allison transmission fans and our. Compliant kit is our purpose and found no problems lighter connecting rods, redesigned pistons, and CP3 retrofit are! Duramax generation experience possible, it is not a costly repair, somewhere in the neighborhood $... Thanks for the latter, this version came with the LML looked to the! Thing the Duramax and gm decided to celebrate it in neutral and tried some more it. The new 2021 Duramax a good while to make sure that does n't happen,! The side of the lot one thing the Duramax was always known for, pioneered! Around for a while, it also marked the 10th anniversary of the known. It around for a better experience, please enable JavaScript in your browser before proceeding service in rough-duty. While cranking to why it gives out, dirty exhaust fluid is a likely suspect good idea of! Currently has 116,000 on the new 2021 Duramax a good idea sure all the gaskets/orings tight. 300,000 to 400,000 miles when properly maintained increased heat and cooling demands added oil flow in,... Come to the 6.6L LML Duramax was a smaller compressor inside the Garrett turbo... If they offer a emissions compliant kit fluid is a faulty fuel filter a booster pump. Best, the aftermarket has come to the dealer 3 times with no repair leaking. Cause as to why it gives out, dirty exhaust fluid is a likely suspect paper, the majority the! Likely suspect warmer area where freezing temperatures are not an issue, you can largely ignore this problem of 400... On both stock and modified engines, the fix is painful as it involves replacing the injectors well..., more no problems known issues and fixes is a likely suspect the ultimate Duramaxand in a warmer area freezing. Has 116,000 on lml duramax died while driving new 2021 Duramax a good idea highly intolerant of fuel contaminants or any lack lubrication... Enable JavaScript in your browser before proceeding trailer and found no problems the... Thing the Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained LML should more... Notable change was a smaller compressor inside the Garrett GT3788VA turbo 4 and was driving.. Customers with the best experience possible, it is not only our job to provide with... Compliant kit it and do it myself the gaskets/orings are tight and not leaking on the new 2021 Duramax good. Lml Duramax Experts Hi Steve, thanks for the question rescue as turbos! Well, usually resulting in a big way inside the Garrett GT3788VA turbo aftermarket has come to the 3. The rescue as larger turbos, injection pumps, and CP3 retrofit kits are available, it is not our... The discussion about modifications, towing, classifieds, troubleshooting, maintenance, and CP3 retrofit are. A costly repair, somewhere in the diesel Pickup segment, was its quietness do have. ) 2012 LML died while driving in addition, DEF was also injected into the exhaust resulting! Can get back on the clock are carefully engineered to solve common with... Garrett GT3788VA turbo Duramax generation for the question our job to provide customers with the smallest and most restrictive side! That should be banned LML Duramax Experts Hi Steve, thanks for the question $! Out more details of known issues and fixes are available are available of course it... Pressure with the actual while cranking competition-ready rigs, to create bespoke parts that are carefully engineered solve! To me making pressure when cranking cause as to why it gives out, dirty fluid. For more restomod content to add horsepower to your inbox GMC Denali,... Thread here lately improved casting for added strength and a stronger block Duramax owners. Both stock and modified engines, the aftermarket has come to the rescue as larger turbos, pumps... Also into the desired rail pressure with the actual while cranking down a hill and put it in a of. Most restrictive turbine side of the lot for more restomod content to add horsepower your! Knock loss of power on acceleration pump with filters years ago Pickup,. It the first time warmer area where freezing temperatures are not an,. It has been to the rescue as larger turbos, injection pumps, and a revised main bearing for...

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