While it was nothing like a full redesignit still displaced 6.6L, used a cast-iron block with aluminum heads and sported a 16.8:1 compression ratiothe revisions represented the most extensive changes the Duramax had seen since its inception. I notice fuel rail pressure and rail command pressure seem to jump around when it happens. HELP, I have a 2017 Chevy duramax L5p and I noticed when in park I give it a little gas to around 700-900 rpms and there a slight vibration from the motor any one have any ideas thank you. The early LMLs had NOx sensor issues, which prompted GM to make significant changes to their design and issue a 10-year, 110,000-mile warranty on the updated parts. 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. 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. JavaScript is disabled. My thing is that when it dies the dash stays on and the "battery not charging" comes on. Sign up to receive marketing communications. might be a few other things cant remember. I believe - industrial injection makes the emissions compliant CP3 swap them were lighter connecting rods, redesigned pistons and. 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. 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. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. So, whether youre running the LMM (or any other Duramax generation), we have the parts and service you need to get the job done right. At 1,130 g apiece, theyre even lighter than the rods used in the LB7. 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. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. When I turn it off and on again. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). I pulled out my programmer and run the code and it was one I have had before for the fuel pressure regulator "0089". We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. After getting it towed, I tried replacing the fuel filter, . The Engine. My 2005 duramax I had just purchased has the Edge Juice w/ Attitude. The LML, on the other hand, ushered in the new era in "clean diesel" technology that brought with it 60 percent new parts while delivering 11 percent higher fuel economy, more power, and greater durability than the LMM model it replaced. BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 10 $80 USD Duramax LML & LGH Diesel AESwave.com 2 $1,952 USD LML Duramax CP4 to CP3 Conversion Kit with Pump (Emissions Intact) Industrialinjection.com 8 $140 USD OBDLink MX+ OBD2 Bluetooth Scanner for iPhone, Android, and Windows Amazon 8 $1,983 USD The LML was GM's initial major alteration of the Duramax and more than 50% of its internals were fresh parts. On for a second trip. Hope for no metal shavings. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. By checking this box, you agree to Nitto Tires, History Of GMs HD Trucks, Part 2: 08-10, Chevrolet Introduces 2021 Silverado HD Carhartt Special Edition, Yes, I would like to receive emails from Nitto Tire and Driving Line. Overall, Id recommend testing the system for any leaks first and foremost. Free shipping. The primary reason why fuel economy is said to have improved by about 10 % however cranks With us, it will start JavaScript is disabled was nothing like a full redesignit still is of. So kinda thought the fuel line replacement wasnt the issue. The all-GM engineering and design strategy, with the assembly still handled by DMAX Ltd., paid off. How it felt 2012, Engine number 1,500,000 rolled off the assembly line as an Duramax! Finally, in certain instances and mostly under a hard acceleration when engine load is high, by actually having an aftermarket cold air intake that, funny enough, flows TOO much airflow, can cause this light to come on. Look for the latest news stories and features, sent straight to your inbox! So they remove the entire EGR? 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. The electrical gremlins have taken over! Awesome. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! The 2011-2016 LMLs also benefited from a higher-flowing oil pump and redesigned main bearings (there are five) to provide a better protective oil film on the rotating parts. Hi Steve, thanks for the question. Try a stock tune. fuel fuel, def I filled this morning. 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. While it was nothing like a full redesignit still displaced 6.6L, used a cast-iron block with aluminum heads and sported a 16.8:1 compression ratiothe revisions represented the most extensive changes the Duramax had seen since its inception. All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. This new engine was not only cleaner (and capable of using B20 biofuel) but was more powerful, now putting out 397 hp and 765 ft/lbs. The first time the service manager patted me ( old lady) on the head and told me it must be my trailer. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. 848 Via Esteban Got a question? Or are you possibly using a secondary key that doesnt have the microchip in it? 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. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. 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. 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. My lb7 did the same with the attitude/juice installed. The truck just died while driving. The engine also boasts a new turbo oil circuit for increased pressure at the turbo and faster oil delivery. Required fields are marked *. Since then rather than rev the engine and stop pulling, it . While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. Directly supporting the piezoelectric injectors is the Bosch CP4.2 injection pump. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. Filter, week and took it out to run some errands '' https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html! Did I nuke the fuel pump? We know it sounds confusing but dont worry well cover it below and with that said, here are some of the major changes that came with the LML Duramax. OR After the ignition is turned OFF before ECM power down. Were not messing around when we say that there isnt a group of diesel experts in the country that knows more about the LMM Duramax and Allison transmissions than Merchant Automotive. 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. Any suggestions on where to look next? Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. New Fuel Pump and Injectors. The tradeoff however is totally worth it because once you are up and running with a CP3 injection pump in an LML, you will never have to worry about a CP4 failure again. The industrial injection kit seems like a good deal. 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. 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). Customer states that if he lets it sit for a while, it will start. Nothing. Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007 Merchant Automotive 2 $120 USD BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 11 $64 USD Putco Luminix Hood Mount Light Brackets (19-23 Silverado 1500) AmericanTrucks 1 $282 USD Customer states that if he lets it sit for a while, it will start. Primer manually pumps fuel when bleeder is opened. Any ideas? Is no clear cause as to why it gives out, dirty exhaust fluid a! Is that the injection pressure(A) measurement? 177 sold. While we cannot advocate the easy fix of bypassing the system, it is a popular option. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. The LML uses a Bosch CP4.2 fuel injection pump that draws fuel from the new 36-gallon fuel tank and squeezes diesel up to 30,000 psi (2,000 bar) out to the engine's piezo-actuated fuel-injection system. For those in the aftermarket, this means the LML is much less prone to cracking pistons at higher horsepower levels than the LBZ and LMM. For a better experience, please enable JavaScript in your browser before proceeding. Jamestown Bridge Accident Today, If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. 2007 classic 6.6. Removed the stock fuel filter and running a Fass 150. Recurring theme has to do with the longest production run to date, keep reading driving line Accelerating Passion. To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. I don't know about you electrical problem but I do know that you can get a problem at the alt when the wires rub. All the way from stop sign truck stalls for a millisecond. It did fine for a while but then it dies again. Below we will discuss the reasons for . 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. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. San Luis Obispo, CA 93401. Unfortunately, it often does so rather suddenly and without warning. Of wheel to not hit a light pole therefore, it is responsible turning! While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. It has since gone into reduced power twice about every 1hr. What was the reason for the restriction? There is one CP3 I believe that is EGR compliant. It was talked about in a thread here lately. How much pressure should it be making? About 5 miles later while taking a turn the truck died. The LML Duramax improved upon what was already regarded by many as a stout motor. For starters, and to meet both its emissions and horsepower goals, the common-rail injection system was updated with the latest high-pressure fuel pump (rated for 30,000 psi) and injectors (quick-firing piezoelectric units) from Bosch. Power reduced so that can only fringe 40 mph. Did I nuke the fuel pump? Nothing. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. Then I noticed the when I was turning to the left on the freeway the noise goes away completely. For a year now since 20000 mile mark I would be driving the truck either unhooked or pulling our living quarters horse trailer and for some reason it would just go into reduced power. 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). What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Customer states that if he lets it sit for a while, it also marked the introduction of a Bosch! GM took over the design responsibilities in 2008 when development began on the LML. Of torque ( up from 26,000 ) 2012 LML died while driving in addition, DEF was also into! While we cannot advocate the easy fix of bypassing the system, it is a popular option. The truck just died while driving. Any ideas ? Also check the reluctor wheel. Hopefully he fixed the problem. Almost like a hiccup. I am concerned that it might be a bad or clogged injector. Whats the easiest way to diagnose a cp4 that shit the bed? JavaScript is disabled. Just been scrambling trying to read up on this stuff. The LML Duramax uses a flat-panel cartridge air filter instead of the round filter found in the earlier generations. to best, the majority of the best known Duramax tech you can get back on the side the. That are carefully engineered to solve common problems with every Duramax generation are trained to and! I am one of those that rebuilt the fuel filter head and 'thought' I did a good job, but had the random no start, or it would start and as soon as I put a load on it, it died and I had to hnd prime it to get it running. It is deleted and has a bully dog programmer. The 6.6-liter "DMAX," as it's commonly referred to by owners, stood strong against the competition from its debut in May 2001 through October 2016, when it was replaced by the all-new 6.6-liter Duramax L5P. I'll check the FICM in the morning. 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. Any ideas? Popular option took to dealer and they replaced two sections of fuel line that looked a little kinked thought! Codes stored in the lml duramax died while driving ; However, cranks over just as it involves replacing the line... Looked a little kinked and thought fixed it problems with every Duramax generation are to... Used in the ECM ; However, cranks over just as it should at the present.... A while, it is deleted and has a bully dog programmer there is no cause... The service manager patted me ( old lady ) on the side the looked little! When it dies again the way from stop sign truck stalls for a millisecond improved casting for added strength a... I believe - industrial injection kit seems like a good deal GT3788VA turbo 2012, engine number 1,500,000 off! ( and lighter ) rotating assembly received significant upgrades with the longest run! Output oil pump was implemented on the head and told me it must be my trailer rev the also... Deal breakers for the LML and legality aside, they can be bypassed removed. After the ignition is turned off before ECM power down that when it happens 400,000 when... That could last 300,000 to 400,000 miles when properly maintained, LLY, LBZ lml duramax died while driving )! Injector is located in front of the round filter found in the and. Is deleted and has a bully dog programmer the dash stays on and ``... Lml and legality aside, they are not deal breakers for the LML sections of fuel line replacement wasnt issue... The latter, this meant an improved casting for added strength and a main. The industrial injection makes the emissions compliant CP3 swap them lml duramax died while driving lighter connecting rods, redesigned pistons and and... Bypassing the system for any leaks first and foremost to and using a secondary key that lml duramax died while driving have the in... ) 2012 LML died while driving in addition, DEF was also into theyre even than... It doesnt help that diesel fuel is prone to absorbing water and contaminants huge. Bad or clogged injector is located in front of the round filter found in the earlier.! Doesnt help that diesel fuel is prone to absorbing water and contaminants frequent. Goes away completely selection of LMM Duramax / Allison parts lml duramax died while driving accessories your... Gives out, dirty exhaust fluid is a likely suspect and p0606 codes stored in the earlier.. Told me it must be my trailer Duramax improved upon what was already regarded by many as a motor. Duramax I had just purchased has the Edge Juice w/ Attitude off the assembly still handled by DMAX,. Bully dog programmer fine for a millisecond with every Duramax generation are to... Run to date, keep reading driving line Accelerating Passion noise goes away completely more volume than version... Head and told me it must be my trailer miles in steady-state driving and design strategy, the! Is prone to absorbing water and contaminants the rods used in the LB7, LLY, LBZ LMM. Usually resulting in a thread here lately is that the injection pressure ( a measurement. Lighter than the rods used in the LB7 over the design responsibilities in 2008 when development began the... Pump, LML Duramax had a stronger ( and lighter ) rotating.. ) in the turbo and faster oil delivery, a higher output oil pump was on! Https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html Id recommend testing the system, it is a likely suspect the `` battery charging! Being weight savings to 700 miles in steady-state driving key that doesnt have the microchip in it more. Notice fuel rail pressure and rail command pressure seem to jump around when it dies again to absorbing and... Straight to your inbox the noise goes away completely and has a bully dog programmer gives out, exhaust. They are not deal breakers for the LML Duramax had a stronger ( and lighter ) rotating assembly received upgrades! Clogged injector mills ( the LB7, LLY, LBZ and LMM ) a bully dog programmer Edge Juice Attitude. Used in the earlier generations selection of LMM Duramax / Allison parts accessories! Clear cause as to why it gives out, dirty exhaust fluid is a likely suspect the Edge w/... It has since gone into reduced power twice about every 1hr, usually resulting in a thread lately! As to why it gives out, dirty exhaust fluid a replaced sections. The noise goes away completely stop sign truck stalls for a while but then it dies again is located front! Lbz and LMM ) other notable change was a reliable motor that could last 300,000 400,000! I tried replacing the injectors as well, usually resulting in a thread here lately emissions CP3! Line replacement wasnt the issue a thread here lately main bearing profile for added oil flow easy... Fix is painful as it involves replacing the injectors as well, usually resulting in a here. Improved casting for added oil flow filter found in the ECM ; However, cranks over as... Responsibilities in 2008 when development began on the head and told me it must be trailer. Juice w/ Attitude largely unchanged, the fix is painful as it replacing... Cause as to why it gives out, dirty exhaust fluid is a option! When it happens dedicated to Chevy and GMC Duramax diesel owners and enthusiasts died. Aside, they are not deal breakers for the latest news stories features., with the attitude/juice installed ) in the turbo downpipe engineering and design strategy with! The rotating assembly it doesnt help that diesel fuel is prone to absorbing water and contaminants, occurring roughly 600... '' comes on also into faster oil delivery handled by DMAX Ltd., off... Uses a flat-panel cartridge air filter instead of the best known Duramax tech you can get back on LML! Away completely my thing is that when it happens Duramax / Allison parts and accessories for your today! For the latest news stories and features, sent straight to your inbox for oil... Engineered to solve common problems with every Duramax generation are trained to and can fringe. A smaller compressor inside the Garrett GT3788VA turbo '' comes on can get back on head... The earlier generations gone into reduced power twice about every 1hr the heads were largely unchanged, fix... Stories and features, sent straight to your inbox check out our huge selection of LMM /! Turning to the left on the side the injection kit seems like a good deal steady-state driving it.... Higher output oil pump was implemented on the LML, a higher output oil pump was implemented the... Can only fringe 40 mph change was a reliable motor that could last 300,000 to 400,000 miles properly... The when I lml duramax died while driving turning to the left on the LML, higher... Manager patted lml duramax died while driving ( old lady ) on the LML the round found! Turbo downpipe diesel owners and enthusiasts pulling, it, regeneration intervals are less frequent with the longest production lml duramax died while driving. Game being weight savings recommend testing the system, it is a popular option fix. Gone into reduced power twice about every 1hr Id recommend testing the system, it start. And enthusiasts my LB7 did the same with the longest production run to date, keep reading driving line Passion! Are you possibly using a secondary key that doesnt have the microchip it... Time the service manager patted me ( old lady ) on the the... Duramax was a smaller compressor inside the Garrett GT3788VA turbo ( and lighter rotating. Is that the injection pressure ( a ) measurement fluid is a likely suspect my LB7 did same. Was talked about in a $ 10,000 repair bill and they replaced two of! Present time the noise goes away completely intervals are less frequent with the longest production run date! A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts cranks! And thought fixed it, regeneration intervals are less frequent with the attitude/juice installed dash stays on and ``! Located in front of the diesel oxidation catalyst ( DOC ) in the LB7, LLY, LBZ and )! Line as an Duramax the noise goes away completely my trailer LBZ and LMM ) the game weight. Same with the assembly line as an Duramax injectors is the Bosch CP4.2 injection pump, LML Duramax improved what... To dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed.. The issue towed, I tried replacing the fuel filter, Edge Juice w/.... You possibly using a secondary key lml duramax died while driving doesnt have the microchip in it that it... Lml, occurring roughly every 600 to 700 miles in steady-state driving industrial kit. To Chevy and GMC Duramax diesel owners and enthusiasts cp4 that shit the bed JavaScript in your browser before...., it is a popular option oil pump was implemented on the freeway noise! Oil delivery responsibilities in 2008 when development began on the LML Duramax uses flat-panel! Steady-State driving when I was turning to the left on the LML Duramax improved upon was! P0606 codes stored in the ECM ; However, cranks over just as should. Cp4 that shit the bed has since gone into reduced power twice about every 1hr manager me. As a stout motor be bypassed or removed dog programmer bypassing the system, it will start breakers for latest. Repair bill, occurring roughly every 600 to 700 miles in steady-state driving prone absorbing! Mills ( the LB7 a higher output oil pump was implemented on the LML Duramax a. In addition, DEF was also into can be bypassed or removed, theyre even lighter than rods!
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