However, the technology onboard is historic. But has the L5P lived up to all the hype?

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For the most part, yes. With that said, thanks to aftermarket wizardry, we now know that rwhp is attainable on the stock injectors, injection pump and turbocharger. In March ofDuramax production reached the two million milestone in the form of the L5P engine shown above.

A new, gray iron casting combined with heat-treating is said to have improved block strength by percent, and according to GM, the new block is capable of coping with cylinder pressure in excess of 2, psi or bar. Big cross sections lead to shorter port distance from the intake valves and drastically revised intake ports bring not only more air, but equal airflow into each cylinder. A stronger aluminum casting permits the combustion area of the heads to withstand the higher cylinder pressures the L5P sees and beehive valve springs with ultra-light, LS-style solid rollers also making it into the valvetrain mean this engine will have no problem handling high rpm.

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An added benefit of the new cap design is the added clearance it provides between the crankshaft. Given the failures that plagued the LBZ and LMM and with the LML utilizing pistons fairly similar to those two enginesthis is a step in the right direction as far as piston longevity is concerned.

The pistons themselves are taller, thicker walled for added strength and as a result are heavier than previous versions. The percent horsepower improvement the L5P enjoys over its LML predecessor would only have been possible with a higher-flowing turbocharger—and the L5P has one. Instead, an electrically controlled and actuated BorgWarner unit handles boost production up to 28 psi in stock formprovides quicker variable vane response and doubles as a turbo brake to help bring heavy loads to a halt.

Top Issues With Power Stroke, Duramax, and Cummins Engines

The pump is still located at the front of the lifter valley, but the HP4 uses three high-pressure cylinders vs. On top of all of these standard benefits, the HP4 pump is capable of operating at 36, psi without issue. The aftermarket is going to have a lot of fun with this pump. The L5P engine reverts back to solenoid-style injectors instead of sticking with the piezoelectric units we saw in the LML.

The difference here is that these solenoid style injectors are highly advanced, G4S Gen III units from Denso and are said to flow approximately percent more fuel than the LML injectors. The injectors are equipped with seven-hole mini-sac nozzles, which aid fuel atomization to reduce emissions. Each injector can carry out as many as seven injection events per combustion cycle, which means multiple pilot events to quiet the engine and more than one post event to further aid in emissions reduction.We think of diesel engines as some of the most robust and reliable machines in existence, and for good reason; they power everything from cargo ships on the open seas to the three-quarter-tons rolling down American highways.

By and large, no matter if you drive a Power Stroke, Duramax, or Cummins-powered truck, you drive a capable vehicle with an engine built to withstand extremes that would leave gas motors smoking by the side of the road. Still, these diesel powerplants are not perfect, and we thought it would be good to explore the biggest flaws involved in each brand. For this article, we will look at the top issues affecting the 6. To that end, we spoke with diesel experts from three different businesses — American Diesel in Murrieta, California; Strictly Diesel in Phoenix, Arizona; and Industrial Injection Diesel Performance in Salt Lake City, Utah — to learn how the mainstays of each American brand suffered failures throughout the years.

Rather than continuing the line of International-built motors that started way back with the 7. One of the things that separated the 6. The point of the DualBoost was to facilitate faster spooling, offering greater throttle response than before. As innovative as it may seem, the DualBoost was also its own worst enemy. This problem affected Super Duties all the way until the model year, when the turbocharger was redesigned and given a more commonplace compressor setup.

The Duramax was jointly developed by GM and Isuzu in the early s to get away from the Detroit Diesel days of yore.

2019 l5p problems

Miraculously, the engine has had incredible staying power in an ever-changing arena of ideas regarding emissions, efficiency, and power numbers. Proof of this comes from the fact that it has never dipped or risen above the 6.

Photos: duramaxdiesels. While the fuel is optimal for the sake of reducing harmful emissions, it has the deleterious effect of having less lubricity than the diesel fuel that came before.

This leads to either bricking the pump or an explosion that causes metal shavings to be dispersed throughout the entire fueling system. One solution to the CP4 is to simply buy a CP3, which is arguably better than its successor in that it delivers fuel with less stress to the internals. Granted, from what we could shake out from internet forums, the chances of this happening were quite low; that is to say, it is a rare problem. Still, the heavy cost of replacing the fueling system makes it one of the biggest concerns to think about when considering a late-model Duramax.

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There are two solutions to this problem, the first of which is to buy a lift pump. The next option is more popular and involves swapping out the CP4 for its predecessor, the CP3. Debuting inthe 6. Where the engine trips up is not on the intake or fueling side of things, but rather the exhaust.

Over time, the 6. From that, it can lead to cracking and lost efficiency in the exhaust system. When this happens, the mounting bolts of the manifolds break. Speaking with Quince Graveen of American Diesel, the problem that comes up time and again, no matter the brand, involves cooling the turbocharger. When you take a turbodiesel out on the highway, you can get it up to 1, degrees Fahrenheit.

Taking it back home and shutting it right off denies the turbocharger the opportunity to cycle oil through and cool down. So, make sure you let the truck idle for a few minutes, and your turbocharger will last a good while longer.

Hate seeing this on your dashboard? Then let your truck complete its regeneration cycle if and when it comes. What do you find to be some of the biggest issues affecting the current crop of diesel trucks? Have you learned of any problems affecting the Cummins 5. Let us know your thoughts in the comments section below.All vehicle manufacturers are required by U. This informational bulletin explains there is another steering hose that can be used for cold weather drivers that experience a steering hose leak.

This technical bulletin provides repair information to correct a customer concern of Intermittent "Service Steering Column Lock" message displayed with U Set. This Preliminary Information communication provides information to the technician about vehicles that may have any of these concerns remote keyless entry, passive Entry and Start Inoperative, No Fob detect message on driver information This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.

This technical bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern that is caused during extremely low temperatures. This informational bulletin provides information for the customer to pair their phone in order for the push to talk button on the steering wheel control to work.

This Preliminary information communicates information on ahydrauilc rush type noise from the power steering gear. This technical bulletin provides a procedure to apply grease to the leaf springs to correct a condition of a squeak noise from the metals making contact. This technical bulletin provides a procedure for re-torque the lead springs. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.

This technical bulletin provides repair information to correct a customer concern of pulsing, grinding, scraping noise from brakes, uneven front brake pad wear. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent "Check Trailer Wiring" or "Service Trailer Brake" message on the Driver This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle.

This technical bulletin provides a procedure to validate if the parking pawl actuator is not working as intended, causing the parking pawl to engage while driving. This Bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

This diagnostic tip provides a procedure to aid in performing a diagnostic test to verify if the camshaft alignment pin has been sheared away. This informational bulletin provides information on higher than expected oil consumption. This informational bulletin advises the technician of how the Soot information has changed from grams to percentage. This technical bulletin provides a procedure to replace the head gaskets if found doubled stacked.

This informational bulletin provides information on 6. This informational bulletin explains the normal noises an engine may make when the ambient temperature outside is cold or the vehicle has sat for a few hours. This engineering informational bulletin is requesting information on ways to check to see when the vehicle needs a oil change without the oil life monitor notifying you.

This Preliminary information communicates to the dealer technician using the PICO scope will aid in determining if the if the engine or transmission is root cause of a vibration or shudder concern. This Preliminary information communicates to the dealer technicians that the oil life monitoring system for Duramax 6.

2019 l5p problems

This informational bulletin provides information on a normal engine operating condition for faster emission warm up time. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be This informational bulletin provides information on High Oil Pressure during Initial Start of Vehicle is considered a normal characteristic and no repairs should be completed for this condition.

This Preliminary Information communication advises the technician that there have been some reports that the current engine hours are not correct and display 0. This informational bulletin provides information on characteristics of the new engine versus the old engine. This Preliminary Information communication provides information to the technician that some vehicle may have an?General Motors' highly anticipated reveal of the next generation Duramax diesel was momentarily interrupted by inadvertently publishing details of the engine's model year horsepower and torque figures via GM's Powertrain division website.

Full details of the Duramax L5P shortly followed, outlining the various improvements and upgrades that help it produce horsepower and lb-ft of torque in addition to handling the rigorous conditions experienced under such loads.

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Although the L5P measures in at 6. The time leading up to the introduction of the L5P had been chalked full or rumors and speculation regarding the new Duramax, which some insisted would require clean slate revisions and an increase in displacement to reach the segment's leaders. The rumors were put to rest when the 6.

A notable revision of the fuel system resulted in the advent of electronically actuated solenoid injectors instead of the piezo electric injectors the Duramax engine platform had used since its inception in Direct injection, 29, psi high pressure common rail, solenoid injectors delivering up to 7 injection events per combustion sequence.

Cast nodular iron main bearing caps, forged steel crankshaft, steel camshaft, powered metal connector rods. Although the Duramax remains at 6.

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The L5P's electronic and structural design features are more sophisticated and robust than ever before. Contributing to the L5P's increase in power as well as ensuring survival under greater engine loads are the following changes and improvements:. New engine block features 5 nodular iron main bearings and 4 bolt, cross bolted main bearing caps. The turbocharger design is said to provide more effective, more efficient exhaust braking through enhanced VGT control. The cast aluminum top section acts as an engine block girdle, increasing strength and overall rigidity.

GM claims the laminated steel section was added as a noise suppressant, as aluminum has a tendency to resonate engine harmonics. New glow plug control system features a temperature compensation attribute which can adjust current flow to each individual glow plug to maintain consistent temperature cylinder-to-cylinder during cold starts.

L5P equipped trucks feature a unique, functional hood scoop integrated alongside a standard air intake system. In additional to providing a cooler air intake charge, the hood scoop provides a ram air effect at cruising speeds, reducing turbocharger lag and improving overall engine performance while the vehicle is in motion.

The hood scoop system includes an air-water separation chamber that GM claims keeps the incoming air charge dry regardless of ambient conditions.

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The L5P's intake system is a patent pending design. Forthe Duramax L5P produces lb-ft of torque at 1, rpm and hp 2, rpm. Electronically controlled and actuated variable geometry turbocharger, air-to-air intercooler. OHV overhead valve4 valves per cylinder 32 valvemechanical roller lifters.We know, advertisements are annoying and slow down the internet. Unfortunately, this is how we pay the bills and our authors.

We would love for you to enjoy our content, we've worked hard on providing it. Please whitelist our site in your adblocker, refresh the page, and enjoy! The engine is a derivative of the 6. GM Authority Founder with a passion for global automotive business strategy. Just like before pre09 med duty exact same engine with different tuning programmed in it and maybe a different larger oil pan.

I work at the Moraine, OH assembly plant, and it is not a smaller turbo, it is all in the tune. Virtually the same exact engine. All things being the same, an engine used in a truly Heavy Duty truck will have a much lower power output.

GM and all other companies have durability test schedules for engines that increase in severity and hours of duration as the GVWR of the vehicle goes up. They limit fuel in the tune, among other things, to ensure they are at a safe power output that will last the full duration of the test without any worry. At least GM should give buyers a choice. I would like to see the frame and how many bolts attach the suspension.

2019 l5p problems

Navistar, Ford and other MD manufactures. Now that GM is in bed with Navistar I bet there are a lot less and the components are not as good as the last MD truck was. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Notify me of followup comments via e-mail. You can also subscribe without commenting.

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Contact us. Close Menu. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Anybody had any problems? Thread starter 5oclocksomewhere Start date Apr 11, Joined Apr 18, Messages 2, Reaction score 3, This is my 3 dodge cummins since 03 and none have ever left me walking.

Dodges only weak point seems to be the transmission.

2017-2019 6.6L L5P GM Duramax Chips / Programmers / Tuners

Since the stuff I tow is starting to get a lot bigger that transmission weighs on my mind. Thinking about getting Rid of the ram and buying a new Chevy Duramax Dually?

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Ford guys sorry not interested in one of those piles of shit. Sorry but I will never waiver on that even if somebody try giving me a Ford.We know, advertisements are annoying and slow down the internet. Unfortunately, this is how we pay the bills and our authors.

We would love for you to enjoy our content, we've worked hard on providing it. Please whitelist our site in your adblocker, refresh the page, and enjoy! Displacing 6. The new Duramax 6.

Additionally, a new, patent-pending vehicle air intake system with functional hood scoop drives cool, dry air into the engine for sustained performance and cooler engine temperatures during difficult conditions, such as trailering towing on steep grades. Cooler air helps the engine run better under load, especially in conditions where engine and transmission temperatures can rise quickly.

The 6. Next-Generation Design The new Duramax 6.

2019 l5p problems

Air Intake System Additionally, a new, patent-pending vehicle air intake system with functional hood scoop drives cool, dry air into the engine for sustained performance and cooler engine temperatures during difficult conditions, such as trailering towing on steep grades.

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