The Duramax L5P, the current model first released in the 2017 model year, easily takes the crown as the best Duramax engine yet produced. My 2013 Duramax did not have this problem, in that regard it was a much better truck. Listed here are some photos of 2019 Duramax L5p Problems/page/3 . Every … Now that HP Tuners have unlocked the possibilities, Duramaxtuner is wanting to know more. Topics: Introduced in 2001, the LB7 is the OG 6.6L Duramax. If you’ve been following the Duramax world, you know that these trucks change every few years. Tests are showing that this stock pump is capable of 800+ horsepower. L5P. L5P: Jump to Latest Follow 1 - 3 of 3 Posts. Took delivery of new 2018 Crew Cab Dually 3500HD on 2/19/18. On older Duramax models (LB7, LLY, LBZ, LMM, and LML), tuning hardware has been able to unlock the ECM and TCM through the OBDII port during a programming sequence. It's what every Duramax lover is talking about right now! Mechanically, the L5P is stout and very few major problems have been reported. You have a kick ass truck with the 2020 2500 with a Duramax and Allison combo . Trucks with 6.6L L5P Duramax engines are the most recent models GM was creating, so for many people, the search for a tuner is not because of a lagging older engine, but rather to unlock the power that they know is hidden inside their truck’s brand new engine system. The Denso injector really help push the possibilities of this diesel to a different level. It features a unique ECM that is causing problems for custom tuners. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat. Reactions: TPC and 5oclocksomewhere. As you’re well aware the L5P Duramax is all diesel enthusiasts are talking about right now. Hi Jerry- No problem, we just sent it over. One last thing of note about this turbo is that the compressor is significantly larger while the wheel looks very similar in size. Make your diesel have more efficient power and fun to drive with our Chevy/GMC Duramax L5P 6.6L Diesel Performance Module exclusively for Chevy/GMC Duramax years 2017-2018. That is why we have been seeking hard to find information about 2019 Duramax L5p Problems/page/3 anyplace we can easily. First off, as you see in the picture above, the geometry of the turbo is no longer controlled by oil, but rather by a motor/computer. Once cleaned, it is a good idea to insure you take your truck on an extended … This has to be one of the reasons why GM went with Denso’s HP4 pump. All the problems associated with emissions system and injection pump have been taken care of, and for 2017 GM switched suppliers of the injection pump from Bosch to Denso. Refer to Bulletin #17-NA-110 for additional information. Duramax Engines Through the Ages. August 5, 2020 by Jake 7 Comments. Have DEF problems been sorted with the L5P? I have been to two separate dealerships for this issue, both of them tell me nothing is wrong and it is normal. Regen issues, thumping sound from the motor, and a few other smaller things. Another major change the L5P has seen is in the injectors. Any questions or suggestions drop me a line. hbspt.cta._relativeUrls=true;hbspt.cta.load(1747108, '263de6bf-88f6-4ca5-bbac-c981fdd8f1aa', {}); If you’re looking for more info about L5P, be sure to click the button above and fill in your info and one of our knowledgable Diesel Experts will contact you within a few days. Apr 11, 2019 #5 checkrd past Well-Known Member. This was in-efficient and often caused problems on trucks with any sort of performance modifications. Also, it does not matter what the climate control settings are, it can be either fresh air, recirculating air, or completely turned off, we still … Overheating can sometimes be attributed to head gasket failure, as the LB7 Duramax does suffer from a small radiator, fan, and problematic water pumps. North Carolina, South Carolina, Alabama, Georgia, Florida, Puerto Rico. For the first time in … The fill cap used to fill the system is located on top of the tank. While getting there hands on the ECM and doing intense R&D. I Can't seem to find any similar issues on the forum so starting new topic. One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. … It’s obvious to see why folks were excited once the L5P was announced and hit the market. Also name of recommended fuel additive . It’s also extending the oil life in the truck, meaning fewer oil changes and longer time periods before changing your oil. Overheating typically occurs while towing in the Summer months, and is most prevalent in 2005 or earlier models (2006+ models received a larger radiator and fan). Research shows that these injectors are showing 20% more flow than the previous style found in the Duramax. Research shows that these injectors are showing 20% more flow than the previous style found in the Duramax. Menu; Cold Air Intakes; Air Filters. You must travel above 30 mph for at least 20 minutes until the clean filter message goes off. Check out the MAP Sensor Spacer Kit for 2017-2020 Duramax L5P at S&B Filters. The new truck ditched the Bosch stock injectors for the Denso injectors. Yes you read that correctly, engineering really is pushing the limits on these trucks and we are liking what we see. Andrew Grow June 6, 2019 at 4:15 pm - Reply. Model year 2017 marked some major changes for the Duramax fuel system. The development of this fifth-generation V-8 is more of a rebirth than an evolution. As if its class-leading horsepower rating of 445hp and 910 lb-ft of torque available at a low 1,600 rpm wasnt enough, upon its release GM also claimed the L5P made use of the most robust Duramax crankcase ever cast. Outside of this problem, there aren’t many major or costly common problems associated with the engine. This new truck is no different. I am so disappointed with this one. Alright good, but how is this going to perform? I LOVE the ... SilveradoSierra.com - Chevy Truck Forum | Silverado Sierra GMC Truck Forums The only site focused on Silverado/Sierra trucks exclusively.