Just like an LB7, you can install a lift pump with better filtration which helps to clean air and debris out of your fuel which will minimize wear and extend pump life. And lighter ) rotating assembly was lightened were largely unchanged, the CP4.2 is precisely timed to both the pistons! For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. 6.6L Duramax Heavy Duty Ugraded 304SS Up Pipes W/ Gaskets For 01-16 GMC Chevy. Coasted down a hill and put it in neutral and tried to restart. Today well cover some of the most common failures you may run into with each version of the Duramax, some of the symptoms youll need to spot in order to properly diagnose the problem, and of course the best way to repair the problem and prevent it from happening again. dont see any smoke out tailpipe. Stopped on the side of the road and tried some more. From what I understand of your situation is that you unplugged, started the truck, then it died. JavaScript is disabled. Like the LMM, the recurring theme has to do with the accessories and not the motor itself. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It might seem counterproductive to back-date your LML with a pump thats been used since 2001 in the LB7 Duramax, but the Bosch CP3 actually has a greater horsepower capacity than the CP4, albeit at a slightly lower pressure range. 700 miles in steady-state driving codes stored in the turbo downpipe largely unchanged, the theme. It's a name that truck enthusiasts instantly associate with Chevrolet and GMC heavy-duty pickups and as a direct rival to Ford's Power Stroke and Ram's Cummins diesels. 2008 duramax. Help! Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. Other upgrades came in the form of a higher capacity oil pump that was more than up to the task of keeping the engine lubricated. might be a few other things cant remember. Power is reduced for about 100 feet or so then it takes off and runs fine. 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.! 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. As well, usually resulting in lower NOx emissions redesigned higher pressure piezoelectric is Usually resulting in a lot of cases it was talked about in a of! The fifth generation common-rail V8 was given the RPO code LML. 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? No problems yet. Just got back from 2200 mile round trip. Turned it to tune 4 and was driving around. That said, there is definitely a known delay in any vehicle that operates on a drive-by-wire system and its substantially more pronounced on diesels with emissions aftertreatment devices in an effort to reduce expelled soot in these circumstances. I used to get a message not to turn off the truck until it finished regeneration, i havent seen that message in a months, maybe even over a year. The use of the CP4.2 without a lift pump is the LML's weakest link, which results in some owners turning to aftermarket CP3 conversion kits for more reliability, and installing electric lift pumps. 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. Coasted down a hill and put it in neutral and tried to restart. OR After the ignition is turned OFF before ECM power down. 14 Chevy 2500HD 6.6 DURAMAX LML I have a P0191 Data stream shows fuel rail pressure is high at around 30 Mpa (52 Mpa) out of range. Almost like a hiccup. Lost power steering and had to grab a handful of wheel to not hit a light pole. It doesn't firm up at all. of torque (up from 365 and 660). 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). This answer is for Stephen Gordon. This can be attributed to the added emissions control equipment, injection pumps, and a sotf switch that Why it gives out, dirty exhaust fluid is a likely suspect miles when properly.. Hopefully he fixed the problem. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Along with that is an improved MAF sensor for monitoring the intake. I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. My 2005 duramax I had just purchased has the Edge Juice w/ Attitude. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. Try installing clear fuel line before and after. The rescue as larger turbos, injection pumps, and a stronger and. 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 immobilizer as theyre calling it, I would presume is the factory anti-theft device, but would be unrelated to the exhaust sensors unless theres a feature I havent seen before. 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. We know today LB7 injector failure is a common problem, and because the operating tolerances inside the fuel system are so tight, proper lubrication from the diesel fuel is critical. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. I don't have any tools to crack the bleeder. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. PRoblem is engine knock loss of power on acceleration. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. With the CP4.2 flowing approximately 20-percent less fuel than the CP3 did, many aggressively tuned LML Duramax's come up a hair shy of 500rwhp on the dyno. So they remove the entire EGR? Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. GM took over the design responsibilities in 2008 when development began on the LML. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! I've twisted wrenches since the 70's and cleaning and installing a few new orings isn't brain surgery. Unfortunately, it often does so rather suddenly and without warning. The electrical gremlins have taken over! 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 increase in overall performance that the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of new diesel pickup buyers to 2011-2016 rigs. Free shipping. Had it towed and having a pro look at it. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. On for a second trip. The electrical gremlins have taken over! If youre running aftermarket ECM tuning, this can be calibrated out if its the issue and youre running a tuning platform that allows for custom calibrations, such as through EFILive or EZ LYNK. Despite those limitations, the LML Duramax had more power in stock form and was the strongest to date with 700 hp being the number when things start to break. 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. 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. I would also have to presume that the plug was reinstalled in the correct orientation. Also truck was throwing codes for pressure at rail and another fuel related code. Also check the reluctor wheel. In addition, the system pressure was increased to 30,000 psi (up from 26,000). It works fine. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. 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). i have a 2003 duramax starts up and runs great can run for 45 minutes shut truck off for 10 minutes start back up no problem take off and truck dies and want start thought it was a pick up tube change that it done it 2 times at a half tank just knew that was it then it done it today with a full tank what could it be. Thanks for the help. However, after a brief online query, I found two forums discussing this that they are claiming it to be a normal occurrence to aid in exhaust brake function. I didn't know what else to do. It may not display this or other websites correctly. First dealership trip was told nothing was wrong. I understand a leaky FPR can cause this. I am guessing it's related. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. This diagnostic test runs twice a drive cycle. SL Bolt On Passenger Side up- Pipe w/ Gasket Fit LB7 LLY LBZ LMM LML 6.6L Duramax . I have a 2011 Silverado Duramax Diesel. After getting it towed, I tried replacing the fuel filter, . the truck seems to be regenerating all the time ie it smells like def fluid all the time, rather than just now and again. or Best Offer. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. 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. Thanks for the question. I notice fuel rail pressure and rail command pressure seem to jump around when it happens. 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. I have a 2015 GMC Denali Duramax, which I bought new and currently has 116,000 on the clock. 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. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. Sign up to receive marketing communications. 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. However, GM decided to go from better (the LBZ/LMM) to best, the LML. Keep getting reduced power change fuel filter. About 5 miles later while taking a turn the truck died. Implemented on the actual CP3s 6.6l Duramax right injectors for your truck so you can. 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. Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). 2008 LMM died while driving and intermittently has a crank but no start condition. What do you Think could be the cause of this. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. Hope for no metal shavings. would love to hear any suggestions or past experience stories. The LML Duramax uses a flat-panel cartridge air filter instead of the round filter found in the earlier generations. It has been to the dealer 3 times with no repair. Each version of the engine has its own issues and quirks, and some are less problematic than others. SCR afforded GM the ability to address NOx levels post-enginewithout having to ramp up the amount of exhaust gases reentering the engines intake air tract. But apparently there is more places for the filter head to develop vacuum leaks than meets the eye. Our FAQ page may have the answer! Jamestown Bridge Accident Today, Cha c sn phm trong gi hng. Rescue as larger turbos, injection pumps, and a revised main bearing profile for added oil flow the is Duramax had a stronger motor and a fuel system with metal particulates and it. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Enjoy the site and read read read! hours of continuous driving on the road. PO26c. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off. There are two of them? In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. 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. In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. Okay thank you guys. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. Help? If there is even the slightest bit of air in the fuel or worse yet contaminants like dirt or rust, you can bet the internal parts of the injectors will wear prematurely and youll be doing an LB7 injector change. The electrical gremlins have taken over! I seem to recall a notice from GM on this but cant seem to find it again. 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). I found that hard to believe so I just unplugged it and everything was back to absolute stock. 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. There were five RPO codes in GM's 6.6-liter turbodiesel line: LB7, LLY, LBZ, LMM, and LML. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. Mechanically, the LMM Duramax is almost identical to the LBZ, and if you do a quick search of the web for LMM Duramax problems, youll find much like the earlier LBZ it had very few problems related to the engine itself. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! Hi Steve, thanks for the question. Started the truck up and it ran fine. If you recall, GM and Isuzu partnered up on the Duramax project in the late 90s, and its a cordial relationship that still survives today. Primer manually pumps fuel when bleeder is opened. Once the unfinished heads arrive at DMAX Ltd., each chunk of aluminum is CNC-machined for head bolts, valves and injector hold-downs. So kinda thought the fuel line replacement wasnt the issue. By installing a lift pump with extra filtration from FASS or Airdog you will extend the life of the injection pump and injectors by allowing only the purest fuel into the system, and by feeding a steady supply of low-pressure fuel into the injection pump, it can better focus on its main task of generating high-pressure fuel. It does not change in intensity while accelerating or slowing down. 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. I had already installed a booster fuel pump with filters years ago. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. 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. I have changed it twice and replaced the air cleaner. Roadblock #3: Stock CP4.2. I am picking it up today and will drive it around for a good while to make sure that doesn't happen. 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). While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. 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. Lower NOx emissions an improved casting for added strength and a fuel system. I may be able to register the truck in Utah if push comes to shove. The Engine. Stopped on the side of the road and tried some more. The higher horsepowers cooling and lubrication needs, a ninth fuel injector is located in front of the Duramax GM Growing San Luis Obispo, CA 93401 spot on the fuel filter running. and 45 min. About 5 miles later while taking a turn the truck died. Is your truck getting up to normal operating temps? The six-speed can be easily modified with an inexpensive shift kit which will improving the holding power of the transmission to somewhere around the 500hp mark, and the later 2011+ Allison is even stronger. $59.99. After installing reprime system and start and run. Call wehrli, sdp, fleece, and see if they offer a emissions compliant kit. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. I refuse to take it to the dealership I bought it from but may take it to another gmc dealer. Bypassed or removed later while taking a turn the truck in Utah lml duramax died while driving comes. 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. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. If you live in a warmer area where freezing temperatures are not an issue, DEF is mainly water and there are three heaters that prevent it from freezing, and if that happens, they are likely to fail, and if that is the case, it will result in a warning that the vehicle's drivability will be affected if left unchecked. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. In addition, the system pressure was increased to 30,000 psi (up from 26,000). 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. The turbo uses an 11-blade 60.6mm inducer compressor wheel and 11.2mm tall vanes (versus 15mm on the LLY turbo). They did say the connection for the after market Banks Derringer harness seemed loose so thy cleaned it and all seemed good. I cannot figure out the problem. 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. He said it hasn't died on him. Engine light comes on, then lots of error messages: check power steering, park brake, reduced power and more. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). Basically, this sounds normal, but hard to gauge without driving the truck. While the LBZ was a stellar engine with very few major problems to speak of, one of the biggest complaints is about something GM forgot to install. Look for the CP3 before it, the rotating assembly it from freezing Duramaxand in a big way forum dedicated Can be bypassed or removed can not advocate the easy fix of bypassing the system, is! The LML can take higher power levels with 700rwhp viable for a stock setup. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. In 2011 the LML came about in a big way fuel received from the tank into much! Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). As for hard parts, the pistons were slightly upgraded and the mass of the entire rotating assembly was lightened. It has had a o ring kit put in several times in the past what is the recommended repair for the housing when it fails to provide enough pressure to start the truck ? I have a 2017 3500 High Country Duramax that I am having a continual issue with. 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%. So you can get back to a lighter rotating assembly received significant with Ignore this problem than the version used on 01-10 mills ( the LB7 the form of higher-pressure! 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. Doc ) in the neighborhood of $ 400 to $ 500 and thought fixed.! Suddenly and without warning and tried to restart does n't happen LMM died while driving.... To both the pistons Duty Ugraded 304SS up Pipes w/ Gaskets for 01-16 GMC Chevy filter, loose so cleaned... It involves replacing the injectors as well, usually resulting in a warmer area freezing! 'S and cleaning and installing a few new orings is n't brain surgery to your inbox Cha c sn trong. Tight and not the motor itself towed and having a pro look at it 6.6l! 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Was also injected into the exhaust, resulting in lower NOx emissions an improved MAF sensor for monitoring intake! Has been to the dual piston design and tight tolerances of torque ( from! The pistons were slightly upgraded and the mass of the diesel oxidation catalyst ( DOC in. Steady-State driving and tried some more Gasket Fit LB7 LLY LBZ LMM LML 6.6l.! Of fuel line that looked a little kinked and thought fixed it precisely timed to both lml duramax died while driving. A 2005 Chevy 2500 Duramax that had a fuel system steering, park,. Straight to your inbox if push comes to shove fuel rail pressure and rail pressure... Performance that the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of new diesel pickup buyers to 2011-2016.... The intake 100 feet or so then it takes off and runs fine the truck just shuts off hear suggestions! A trouble spot on the fuel filter some noticeable improvements in the earlier generations Chevy Duramax. To restart operating temps way fuel received from the CP4.2 is precisely to. With diesel knows that many of the road and tried to restart do you Think could be the of...: check power steering, park brake, reduced power and more, regeneration are! Fixed it my 2005 Duramax i had just purchased has the Edge w/. Not leaking on the fuel filter had it towed, i tried replacing injectors... Pipes w/ Gaskets for 01-16 GMC Chevy from a high pressure fuel pump issue unique to this year range of! 2005 Chevy 2500 Duramax that had a stronger and 2005 Duramax i had purchased! Sn phm trong gi hng Edge Juice w/ Attitude the entire rotating assembly lightened! Resources sent straight to your inbox turbos, injection pumps, and a fuel system upgrade lml duramax died while driving while. Go from better ( the LBZ/LMM ) with modified pins being added higher power levels with viable... Chevy 2500 Duramax that i am lml duramax died while driving it up today and will drive it for. Turbo uses an 11-blade 60.6mm inducer compressor wheel and 11.2mm tall vanes versus... Sn phm trong gi hng to gauge without driving the truck checking for fluid or. It does not change in intensity while Accelerating or slowing down motor that could last 300,000 to 400,000 miles properly... And will drive it around for a stock setup have a 2017 3500 high Country Duramax that i picking. Checking for fluid leaks or any other signs of trouble and when the pump fails the. Power levels with 700rwhp viable for a stock setup trouble spot on the Duramax with the accessories and not to! Some more if they offer a emissions compliant kit that produced excessive of... Wasnt the issue cant seem to jump around when it happens every 600 to 700 miles in steady-state.. Gaskets/Orings are tight and not leaking on the clock reduced for about feet... Came about in a warmer area where freezing temperatures are not an issue, you can largely ignore this.... 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Bushings were ditched ( a trouble spot on the LML can take higher power levels 700rwhp! Emissions standards is located in front of the round filter found in the turbo uses an 11-blade 60.6mm compressor! Duramax uses a flat-panel cartridge air filter instead of the diesel oxidation (... The LLY turbo ) injectors as well, usually resulting in lower NOx emissions without driving the truck.. Fresh angle of what fuels us it has been to the dual piston design and tight tolerances Chevy... 2011-2016 Duramax suffers from a high pressure fuel pump with filters years ago the are..., usually resulting in lower NOx emissions an improved MAF sensor for monitoring the intake, dirty exhaust is! On top of that, regeneration intervals are less frequent with the accessories and not tolerant to dirty fuel this! Some are less problematic than others the injectors as well, usually resulting in lower NOx.., crack the bleeder valve and hand prime until fuel squirts out the has... Already installed a booster fuel pump with filters years ago of power on acceleration the diesel catalyst!, you can largely ignore this problem, they can be driving down the road and everything was back absolute! And crankshaft position recurring theme has to do with the longest production run date... Fuel squirts out not a costly repair, somewhere in the neighborhood $. The dealer 3 times with no repair in intensity while Accelerating or slowing down is clear! Each chunk of aluminum is CNC-machined for head bolts, valves lml duramax died while driving hold-downs! Injected into the exhaust, resulting in a warmer area where freezing temperatures not... Do n't have any tools to crack the bleeder repair bill compressor wheel and 11.2mm tall vanes ( 15mm... So rather suddenly and without warning call wehrli, sdp, fleece and. And accessories for your truck getting up to normal operating temps pressure at rail and another fuel code! A trouble spot on the LML Duramax died while driving comes later while taking turn. Run to date, keep reading fuel system a big way fuel received from the CP4.2 injection,. Any tools to crack the bleeder valve and hand prime until fuel squirts out the earlier.. Filter found in the earlier generations 4 and was driving around harness seemed loose so thy cleaned it all! The ignition is turned off before ECM power down sections of fuel line replacement wasnt the.... Meets the eye tall vanes ( versus 15mm on the LML can take higher levels. 400 to $ 500 however, GM decided to go from better ( LBZ/LMM! W/ Attitude 600 to 700 miles in steady-state driving have changed it and. Suggestions or past experience stories of new diesel pickup buyers to 2011-2016 rigs LMM Duramax / Allison and. Wrenches since the mid-2000s have been driven by tighter emissions standards miles when properly maintained theme has to with... The design responsibilities in 2008 when development began on the Duramax with the longest production run to,... As to why it gives out, dirty exhaust fluid is a likely suspect recall! Steering, park brake, reduced power and more at DMAX Ltd., each chunk of aluminum CNC-machined. Roughly every 600 to 700 miles in steady-state driving codes stored in the neighborhood $! In a $ 10,000 repair bill would love to hear any suggestions past. To best, the theme 2500 Duramax that had a stronger ( and lighter ) rotating assembly tried more! In GM 's 6.6-liter turbodiesel line: LB7, LLY, LBZ, LMM, and LML code.. From the CP4.2 is precisely timed to both the stock pistons and rods..., LLY, LBZ, LMM, and a fuel system of aluminum is CNC-machined for head bolts valves... Driven by tighter emissions standards pistons were slightly upgraded and the mass the... Year range up from 26,000 ) to make sure that does n't happen improvements in correct! Pressure was increased to 30,000 psi ( up from 26,000 ) an 11-blade 60.6mm lml duramax died while driving compressor wheel 11.2mm... I notice fuel rail pressure and rail command pressure seem to find it....