3.2k members in the Duramax community. Complete loss of electric power. Spend all the next day getting g … So we went back to the shop ran a couple more diag's on it and still couldn't find anything.. For a better experience, please enable JavaScript in your browser before proceeding. http://www.toxicdiesel.co/c/249 How To Remove a LML Duramax Down-pipe of your truck. Protect your LML from catastrophic failure caused by high EGT's LML Duramax Emissions Problems. I have an issue when it's cold and the traction control is on, loss of power, need to push throttle down around 25% to even make it move. IF the turbo is bad. I just went and did a data record with the autocal and I'll send it to atp so hopefully I'll figure out what's going on! I just installed a Bulldog controller to eliminate the DPF/UREA. It really depends on what you are doing with the truck. Sounds like you popped an intercooler boot. 1. Ok so I took the Truck to the stealership because I don't have the time to work on this and need to get to work. Try turning off your traction control and see if it improves. Fifth Generation Duramax Electronics/Tuners, Duramax First Generation: 2001-2004 (LB7), Duramax Second Generation: 2004.5-2005 (LLY), VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. The new injection system helped make the LML the quietest Duramax to date, along with the most fuel efficient given the circumstances. That would be on the suction side. Actually, more and more people are tuning their 2011 + Duramax (LML) with the emissions equipment intact. While the LML seemed to be the “best” duramax to date there has been a serious disturbance since the release of the L5P. Talked to atp and they said the fuel filter would fix the problem but it didn't. Nothing was adding up as everything seemed fine until I actually try to start the thing. it is the worst when in overdrive and trying to speed up. Yes sir you are correct. Going up hill fine, loses power check engine light on. Hi Guys, I have been having some issues of late with my 2011 duramax. JavaScript is disabled. You say its not throwing any codes so does that mean you have an Insight CTS to monitor for codes? Driving to work turbo spooling up then I hear a single POP then a gush of wind (like you would disconnect an airhose from a compressor) Driving I do have loss of power, and now it is giving me P0299. So to start off i have a 2011 GMC Denali HD with Idaho Rob's EFI Live tuning, drove to town earlier today, shut the pickup off for about 2 hours, went to start it up and tried to get on it and the pickup fell on its face (just like limp mode) but its not throwing any codes, no "reduced engine power", if you stand on the throttle it wont take off it just speeds up slow and shifts slow. 128051000 Yeah I've got a full S&B intake, only thing I can think of is it flew in there while I had the filter off at some point! He pulls the mass air flow sensor out and a moth was stuck to the inside of it, pulled the moth off cleaned it up and boom truck runs just like normal! Jump to Latest Follow ... Driving I do have loss of power, and now it is giving me P0299. My name is Danny Voss, I have been working with the tuning department at Duramax Tuner on our emissions equipped truck to get the most out of our LML (2011-2016) Duramax "The Clean Sweep" is Calibrated Power Solution's Emissions intact pull truck designed to kick butt on the pull track and drive home like nothing happened.This truck is the true definition of a sleeper. In 2011, federal emissions regulations had tightened, so additional measures had to be taken to keep the Duramax compliant, so the LML was the first to be equipped with Selective Catalyst Reduction (or SCR), a system which used a urea-based exhaust fluid to break down harmful nitrogen oxides. First I have heard of that, but yes a contaminated MAF sensor can cause all kinds of problems. I did the delete because I was having constant issues with the UREA system. Even on the driveway if you goose it I never hear the turbo spool up when it rev's over 2500 RPM. I Checked the hoses from what I can see (engine is real hot right now) … Diesel Power Products carries the ATS Stage 1 Transmission Package for 2011+ 6.6L GM Duramax LML PPE Heavy Duty Deep Aluminum Transmission Pan 01-19 Duramax PPE-128051000-main 0.00 PPE (Pacific Performance Eng.) Like all Duramax-powered GMs, and even though the ’11-’16 trucks made use of one of the strongest A1000s built to date, the Allison transmission will still need to be upgraded early in the modification process, namely if you plan to expose it to 450 to 500rwhp on a regu… Both the LML Duramax and the 6.7L Power Stroke featured common-rail injection systems with Bosch piezo injectors and the new, 30,000-psi CP4.2 high pressure fuel pump (Ford’s system is pictured above). VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I wouldn't be driving it very far, you needs to find the problem or take it somewhere that can. Others have had response issues, GM … In short, this feature will automatically reduce power output as EGT's start to reach a dangerous point. This exhaust set works perfectly for deleting the LML vehicles– even with different bed and taxi configurations, although a few of the shorter length designs require to trim it to fit. Earlier you mentioned the resonator area 6.6 did you think about removing the resonator and do a visual checking the area out, with the engine NOT running. For a better experience, please enable JavaScript in your browser before proceeding. I have 04 Duramax sometimes runs rough loss of power and smokes gives codes 0341,0335,0374 As I've told others, the rough running and smoke is from excess fuel when engine is running and warm. JavaScript is disabled. This is a great option for Duramax owners that would like a nice, quiet, reliable, efficient truck that performs well every time. there is no codes. Replaced the Fuel pressure regulator. OK so with the Truck in 4wd TC off and everything like that. Asking as I need to get to and from work. LML SMART EGT CONTROL: Duramax Tuner's LSP (Switch-on-the-Fly) Tuning includes a Smart EGT (Exhaust Gas Temperature) Control feature. We own an 2012 LML and had the exact thing happen after filled up at a Pilot in NC, turn out we filled with 2/3 of the tank with gasoline. 2. If you want a more powerful truck that runs smoother and saves on fuel, don’t purchase a new truck, buy the EZLynk AutoAgent 2 for your LML Duramax. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. share. also is worse the faster i go. 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. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants. 100% Upvoted. replaced the mass air sensor. Replaced the mass airflow sensor, but still having problems. cleaned air filter. LML Duramax emissions included a new Selective catalytic reduction system. Thanks in advance! save hide report. Attributes. 3 there's something wrong with the fuel ... Might want to try posting over on the Duramax Forum. Took it off and re-tightened it but turbo still does not spool. Information about GM's 6.6L turbo diesel V8 Duramax LML engine used in the Chevy Silverado HD and GMC Sierra HD, including specs, applications, and more. Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations. Could this all be caused by them and their programming? I've gotten 3 different answers from atp and the power shop. Performance Roadblocks of the LML Duramax. (Pic for attention ) 4 comments. If the top is visually intact, then the bottom end at the CAC blew off/apart. If your truck is bone stock and you just use it for daily commuting and occasionally tow a small trailer, you will probably be safe with stock head bolts. Our 05 duramax used to be the best one we had, but recently started losing power on acceleration, every now and then black smoke. Anyone have any recommendations as to where to look? 2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob. I thought I had it, … Based on a theoretically ideal 90-degree “V” configuration, it combines a cast iron block with aluminum cylinder heads, … The 304 stainless tubing also prevents loss of heat energy and does not corrode like aluminized ... \n\u003c\/table\u003e\nThe BD-Power 1403802 Passenger Side Up-Pipe is a direct replacement for your 2001-2016 GM 6.6L Duramax LBZ\/LMM\/LML. First time out with a load. Bottom Line. Boost loss is on the pressure side. Truck wasn't properly sensing all the air that was flowing through the intake and as a result was backing off fuel delivery. The extraordinary power your truck will gain from GDP tunes will put a smile on your face. Although emissions are necessary on diesel trucks today, they frequently cause issues, especially when they are first released. 1 if the tune was working just fine before it shouldn't be a tuning issue. Something else I want to mention is about 1 month ago (4/21) the dealership replaced my ECM and ever since then the truck 1. does not have the power it once had 2. fuel economy is lower than what it was I lost 2.2 MPG (hand calculated). How bad is it to drive the truck in its current state where it is not building boost and I'm just running off just engine power? :-( still trying to look any other ideas? 2 the tech said it sounded like the torque converter was going out. June 3, 2020; Story By Mike McGlothlin; The LML Duramax left the factory packing 397 hp and 765 lb-ft of torque—but the new, more powerful horsepower and torque numbers weren’t the only changes made for the 2011 model year… This version of GM’s 6.6L common-rail diesel V8 deviates from all others in terms of its injection … Idles just fine, shifts just fine but when you stand on it (wide open throttle) it doesn't downshift it revs up and doesn't take off but shifts at a high rpm and takes forever to get up to 70 mph. I've gotten 3 different answers from atp and the power shop. Good Deal! P0299 is underboost code which if you have a boost leak will pop. So if I pin point it down to the fuel issue do you think installing a lift pump would cure all fuel supply issues? Failure to unplug the UREA system may result in a check engine light and/or dash message, erratic engine operation and loss of power. However, many LML Owners have some basic questions prior to pursining emissions intact tuning. Also incl… LML Pop then gush of wind loss of power. So basically it's not getting enough fuel at WOT? ... Close • Posted by 1 hour ago. I have a intermittent power loss when driving. I just installed a new fuel filter. The last question we get a lot about Duramax Diesel head gasket replacement is whether to use stock head bolts or ARP head studs. Wow! 2 the tech said it sounded like the torque converter was going out. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! The UREA system must at least be unplugged but can be completely removed from the vehicle if desired. Beyond simple bolt-ons—and due to the common-rail injection system—chasing horsepower with these trucks can be fairly expensive. I re-programmed it to a different tune and it still did it, pulled the battery cables off for over an hour, did 6 ignition cycles and still nothing. The LML Duramax was the power house for almost six years(2011-2016) when the L5P was released in 2017. We took it to the shop after changing fuel filter and they got a code for mass airflow sensor and egr. Just hope everyone resolves that easily.. A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. It does sound like you have lost the boost in the intercooler area. Press J to jump to the feed. 11-16 LML Duramax Powertrain. 1 if the tune was working just fine before it shouldn't be a tuning issue. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! The LML was introduced for the 2011 model year and currently remains in … OK, so I checked and rechecked pretty much every connection between the battery and fuse box. 3 there's something wrong with the fuel system and they can't diag it without the truck being there (can't really pick up and go to Idaho or Washington lol). That's what it looks like if your only seeing 16.x kPSI desired fuel rail pressure If the truck is in limp mode it may not command full fuel delivery and why your only seeing 16.x kPSI desired. This is the funny part! Reader D.A. I Checked the hoses from what I can see (engine is real hot right now) and the charge hose (replaced month ago) looks ok. Talked to my mechanic, he said I bet its still the anti-theft system. Duramaxtuner.com presents switchable calibrations for 2011 - 2016 LML Duramax. All in all, an excellent tuner for the LML Duramax. 6.6L Duramax LML specifications & information, GM's latest version of the Duramax diesel. About 50 miles down the road I get the power reduced and the fuel filter life dove down to 0. Let it idle for quite a while, went and drove it and the pickup still did it. Stop for a while light off next big hill same thing. They took a high level look at the truck and the hoses seem ok and they are leaning towards the turbo itself being defective.