Years of duramax - I’ve compiled many reports from various forums and blogs. According to them, I recommend avoiding the following Duramax year models: 2001 – 2004 Duramax LB7. 2004.5 – 2005 Duramax LLY. 2006 – 2007 Duramax LBZ. 2008 – 2010 Duramax LMM. 2007 – 2012 Duramax LML. These specific engine models have received a lot of complaints.

 
See All 64 Photos. The 6.6L Duramax L5P is an entirely new powerplant. The development of this fifth-generation V-8 is more of a rebirth than an evolution. Every single part, down to the nuts and .... Dash auto trade

Duramax History, Lesson 5: LML. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Ford’s upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. The fifth generation common-rail V8 was given the RPO code LML. While it was nothing like a full redesign—it still ...The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.4-Inch Exhaust System: $260. Nearly all of the exhaust systems available for the LBZ Duramax can also be used on the LB7 (’01-‘04), LLY (’04.5-‘05) and even the LMM (’07.5-‘10). Diamond Eye Performance ’s 4-inch diameter, downpipe-back, aluminized exhaust system (shown) is one of these systems. Depending on where you shop, it will ...A little over 3 years after the initial concept, the LB7 Duramax diesel went into production. The resulting engine was a state-of-the-art 6.6L V8 with four-valves-per-cylinder. The LB7 put out a segment-best 300 hp and 520 lb-ft of torque. The LB7 Duramax was considered revolutionary at the time and utilized a turbocharger, intercooler, and ...The joint venture (and resulting engine) was known as Duramax, and the LB7 was the first of many models to come. It’s a 6.6-liter, common-rail injected, 32-valve, V8 turbodiesel which put out 235hp and 500 pounds of torque in its first year, and for the final year of ‘04 the LB7’s output had grown to 300hp and 520 pounds of torque.Worst Duramax Engine Model Years. While the Duramax engines seem to be mostly reliable these days, the earlier years exhibited a lot of problems. We can’t recommend the 2001-2004 LB7, the 2004-2005 LLY, the 2006-2007 LBZ, the 2007-2012 LMM, or the 2011-2016 LML. Take a look at the most common complaints about these Duramax engines.The horsepower of a 6.6 Duramax varies depending on the model year and specific engine configuration. For example, the 2023 GMC Sierra 2500HD with the Duramax 6.6L Turbo-Diesel V8 engine has a horsepower rating of 445 hp @ 2,800 rpm. However, older models may have lower horsepower ratings.As previously stated, the first model year of Duramax was 2001 with the LB7 engine code. This model featured a 3.5″ exhaust system with a catalytic converter and a muffler. This basic system was utilized all the way through 2007 model years ending with the LBZ engine code. The factory exhaust is relatively adequate for engines producing …The Duramax’s greatest years are 2006 and 2007. These engines are both dependable and capable of producing a great deal of power. The only issue with the Duramax from 2006 to 2007 is that the pistons crack when the engine is driven at more than 600 horsepower.6.6L Duramax Diesel Timeline. The Duramax diesel was introduced in 2001 at 300 horsepower and 520 lb-ft of torque and has since evolved to produce 445 horsepower and 910 lb-ft of torque. While certain generations of the Duramax represent little more than more aggressive engine calibrations, others can nearly be classified as clean-slate designs ...Apr 3, 2024 · The LBZ is great in stock form, but get horsepower numbers above 600, and it needs some upgrades to survive. LMM: 2007.5 Through 2010. The LMM engine ushered in the emissions era of Duramax. Although the LMM is almost the same as the LBZ, which makes it a very good engine, it features several new emissions control devices. PowerStrokes came around in 1994, and Cummins' first purpose-built automotive diesel engine debuted all the way back in 1932, and has been affiliated with …The joint venture (and resulting engine) was known as Duramax, and the LB7 was the first of many models to come. It’s a 6.6-liter, common-rail injected, 32-valve, V8 turbodiesel which put out 235hp and 500 pounds of torque in its first year, and for the final year of ‘04 the LB7’s output had grown to 300hp and 520 pounds of torque. When ...The horsepower of a 6.6 Duramax varies depending on the model year and specific engine configuration. For example, the 2023 GMC Sierra 2500HD with the Duramax 6.6L Turbo-Diesel V8 engine has a horsepower rating of 445 hp @ 2,800 rpm. However, older models may have lower horsepower ratings.The Iconic 2011-2016 6.6-liter LML Duramax V-8 engine is the capstone of GM’s Pre-L5P turbodiesels. ... when it was replaced by the all-new 6.6-liter Duramax L5P. During those 15 years, DMAX Ltd ...The 2007 to 2010 model years of 2500 HD and 3500 trucks featured a new body style, vastly improved interior, and the first version of the Duramax LMM engine to have an exhaust after-treatment process that required fuel for it to function.GM 6.6L L5P V-8 Duramax Turbo Diesel Engine Vehicle Applications; Model Year Vehicle Transmission Power (hp / kW) @ RPM Torque (lb-ft / Nm) @ RPM; 2017 – 2023Duramax History, Lesson 2: LLY. Midway through the 2004 model year, GM released the second-generation Duramax, RPO code LLY. Although much of the LLY’s internals match what you’ll find in the LB7, this version of the 6.6L V8 brought an improved injector design, variable geometry turbocharging and cleaner emissions to the table.The Duramax 6.6L V8 turbo-diesel engine is nearing its 20th year of production, after debuting in 2001. Over the engine’s lifespan it has gone through 6 different engine variations: LB7, LLY, LBZ, LMM, LML, and L5P. So, what year did Duramax start using DEF? The first generation of Duramax engines that use diesel exhaust fluid is the LML. These engines entered production in 2011. since EPA made it compulsory ... Today we're going to go on a journey and look at every Duramax engine that GM has built, from the LB7 all the way up to L5P. We're going to look at what make...Here are seven business resolutions you can make and keep in 2022 that will help you build a solid and successful company. What are your business goals for the new year? If I’ve le...Duramax engines have been produced globally since 2001, and include: 6.6L V …PowerStrokes came around in 1994, and Cummins' first purpose-built automotive diesel engine debuted all the way back in 1932, and has been affiliated with …Dec 26, 2018 · DMAX Ltd. Turns Out Number 2 Million. At the time of its release for ’17 model year Chevy Silverado and GMC Sierra HDs, the L5P Duramax belted out a class-leading 445hp, along with an impressive 910 lb-ft of torque at just 1,600 rpm. As a result, an unladen ¾-ton crew cab 4x4 could sprint from 0 to 60 mph in just over six seconds—not bad ... The 6.6L Duramax V-8 was discontinued for the vans' 2017 model year, and GM promises it will replace the big diesel with a version of the 2.8L Duramax I-4 soon. See All 21 Photos Advertisement The 6.6L L5P Duramax was mated to the tried-and-true Allison 1000 six speed automatic transmission for 2017 to 2019 model years. For 2020, the GM-Allison 10L1000 ten speed automatic transmission became standard; although Allison transmissions was responsible for rigorously testing the transmission, it is a GM design and is assembled at GM's ... The Duramax engine has a history that runs deep. It has the following still to this day and continues to up expectations in terms of power and everything else. While it's history stretches back to 1982, we are going discuss the more modern years. The 6.6L was introduced in 2001 and replaced the 6.5L and the company hasn't looked back since. Dark Mode; Light Mode; menu Log inThe most reliable year of Duramax is the model produced from 2011 to 2021. These models include the Duramax LGH, Duramax LML, Duramax XLD25, Duramax XLD28, Duramax LWN, Duramax L5P, and …The GM L5P Duramax is a turbo-diesel engine produced by General Motors for use in full-size heavy-duty (HD) pickup trucks. Displacing 6.6 liters in a V-8 configuration, the L5P is part of a new ...Key Components of Duramax Engines. If you want to achieve 30 mpg with a Duramax engine, it’s important to understand the key components that make up the engine. Some of the most important components include the turbo, transmission, injectors, cooling system, and turbo system.. Related article!: Worst Years For The DuramaxMar 19, 2024 · The safest Duramax model years you can buy are the models produced from 2011 to 2021. These include the Duramax LGH, Duramax LML, Duramax XLD25, Duramax XLD28, Duramax LWN, Duramax L5P, and Duramax LM2. These engines go a step further to provide better emissions thanks to a diesel exhaust fluid/urea injection feature. The Duramax Is An Extremely Strong Engine . It is often the case that new engines produce a lot of power, but do not have internals strong enough to support that power for years of usage.Feb 1, 2023 ... Duramax LLY: 2004.5-2006 model years · Injector harness chafing · Water pump failure · Glow plug failure · Fuel pressure relief valve &m...The RHG6 model turbocharger aboard the LB7 marked the only time a fixed geometry unit was used on a Duramax. Manufactured by IHI Turbo America, the RHG6 sported a 60.6mm (inducer) compressor wheel and a 68mm (exducer) turbine wheel, along with a wastegate. In factory form, the IHI charger sees a maximum peak boost of 22 to 24 psi.Those are priced pretty high, though, in my opinion, for a 14 year old truck. All depends on what you're willing/ capable of spending. Having had 3 duramaxes, LLY, LMM and now, L5P, I can honestly say that the l5p is definitely the superior of the 3. 2018 GMC l5p ccsb stone blue metallic. Mcgaughy's 2" drop shackles.Best Duramax Years . The Duramax engine is a diesel engine produced by General Motors. It was first introduced in the 2001 model year and has been used in a variety of GMC and Chevrolet trucks and SUVs since then. The Duramax is known for its high torque output and fuel efficiency, as well as its reliability. So, what are the best Duramax years?The 6.6-liter Duramax LBZ was a short-lived engine only available for two model years. To meet increasingly strict emissions standards, the LBZ was a more aggressively tuned version of the previous LLY engine. Mechanically, the LBZ used the same Duramax parts as the LLY, but the LBZ generated 360 horsepower, while the LLY only generated 310 ...Power and performance. According to Chevrolet, the 6.6-liter Duramax turbo diesel features eight cylinders with a displacement of 403 cubic inches and comes equipped with a turbocharger for added ...The Duramax engine has been one of the most popular diesel engines in the US for over two decades. Duramax is a heavy-duty V8 diesel engine co-developed by GM and Isuzu. It was introduced in 2001 as the upgrade for the 6.2L and 6.5L Detroit engines. It turned out to be a competent and powerful competitor in the light diesel market. The engine has undergone various improvements over the years ...Dark Mode; Light Mode; menu Log inWorst Duramax Engine Model Years. While the Duramax engines seem to be mostly reliable these days, the earlier years exhibited a lot of problems. We can’t recommend the 2001-2004 LB7, the 2004-2005 LLY, the 2006-2007 LBZ, the 2007-2012 LMM, or the 2011-2016 LML. Take a look at the most common complaints about these Duramax engines.The 2023 Duramax engines, including the 3.0-liter inline-six, have seen power and torque improvements, making them a great option for those seeking a diesel engine in a light truck or SUV application.The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. Chances are, if you’re looking at this page, you’re well aware of the problem.I decided to buy a new 'compact' pickup and ultimately settled on the Colorado with the diesel. As I was looking into the engine, I came to realize I have a distant history with the GM 2.8L. I'm an engineer, and I've been developing diesel engines at the same company for more than two decades now. Back in 2000, my company owned VM …Jan 14, 2016 ... first part of 06 could be lly. Here's a vin decoder for you. Model Year(s) 8th Digit of VIN Duramax Model & Notes 2001 – 2004 1 LB7 2 LLY ...The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.Now, 14 years after DMAX Ltd. was created, more than 1.5 million Duramax engines have been built. The original Duramax was a vast improvement over GM’s …Production Years: May 2010 (2011 model year) to October 2016. Vehicles: 2011-2016 Chevy Silverado 2500HD/3500HD. 2011-2016 GMC Sierra 2500HD/3500HD. …Cateye Duramax is one of the Silverado models with huge demand. An elegant look, and a legendary and reliable LBZ engine are the major features that this model guarantees. On paying a higher price, you can get the latest model years and higher trim levels, which can be useful to you in the long run. Embrace the power, experience the durability ... 1. 2005 Duramax. The 2005 Duramax is one of the worst engines of the entire series. The thing that makes it fail the most is that it has a head gasket problem, which means that the head gasket fails and causes an excess of oil in the coolant. This can cause overheating problems, which will lead to more failures. The first generation Duramax, the 6.6L LB7 engine, produced 235 horsepower and 500 lb-ft of torque. Over the years, these numbers have increased dramatically. In the latest iteration, the 6.6L Duramax offers 445 horsepower and 910 lb-ft of torque, which highlights the continuous improvement in power and performance.These are all the food holidays you'll want to keep an eye on year-round. Let’s simmer on this idea for a moment: Free food year-round. Depending on where you live, there is a good...Aug 19, 2008 ... What you say might be true. My '05 doesn't get the mileage I expected. Unloaded on the freeway will get maybe 18. Average for everything ...The Duramax block and heads are supplied from reliable vendors of General Motors. [vague] This engine was initially installed in 2001 Chevrolet and GMC trucks, and has …GMC/Chevy Duramax Diesel Tuners and Programmers. Show 12 24 36 48. Home Duramax. We carry diesel tuners for all Duramax truck models, including LB7, LLY, LBZ, LMM, LML/LGH, and L5P. We have a diesel programmer for all years of Duramax (2001 - 2020) Save. $80.The Iconic 2011-2016 6.6-liter LML Duramax V-8 engine is the capstone of GM’s Pre-L5P turbodiesels. ... when it was replaced by the all-new 6.6-liter Duramax L5P. During those 15 years, DMAX Ltd ...Here are the years of Duramax engines to avoid: 2001 to 2004 LB7. 2004 to 2005 LLY. 2006 to 2007 LBZ. 2007 to 2012 LMM. 2007 to 2016 LML. These engines are prone to numerous problems, including issues with the fuel lift pump, water pump, fuel injector, piston, and fuel pressure lift pump. Read on to learn more about the Duramax years to …LMM 2007.5- 2010 Started DPF for emissions, all years before had EGR coolers and valves, with the exception of some LB7 engines. LML 2011 EGR, DPF, and DEF fluid emissions equipment. CP4 issues and issues with def fluid have been the most prodiminant issues, strong running engines and plenty of power from the factory.May 4, 2016 · Saids they get better every year. Seems to have problems with his 2016 though, brake controller replaced and now steering rack @ 50,000 miles. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles. Key Components of Duramax Engines. If you want to achieve 30 mpg with a Duramax engine, it’s important to understand the key components that make up the engine. Some of the most important components include the turbo, transmission, injectors, cooling system, and turbo system.. Related article!: Worst Years For The DuramaxEverybody loves free things. And they're easier to find than you'd think! Here's a list of the top 50 free items you can get this year. What’s that you say? You like free things? W...Oct 3, 2023 · In conclusion, the Duramax engine is reliable and durable overall, but certain years offer more reliable performance than others. The best years are 2001-2004, 2006-2007, and 2011-2016, while the worst are 2005, 2008-2010, and 2017-2020. It is recommended to avoid cars with these engines, if possible, to get the most reliable performance. How much does a Cateye Duramax cost? You will have to pay around $10000 for Silverado 1500, and it can go up to $15000 if you prefer later model years and higher trims. The price might rise well above $25,000 if you have your heart set on the diesel model. Bottom line. Cateye Duramax is one of the Silverado models with huge demand.Dec 12, 2023 · The best years for the Duramax are 2006 and 2007. These engines are both highly reliable and capable of a fantastic output. The only commonly stated problem with the 2006-2007 Duramax is that the pistons tend to crack when the engine runs higher than 600 horsepower. While the LML Duramax is a reliable engine overall, there are a few years that have been known to have more problems than others. In this section, we’ll take a closer look at the 2011 and 2012 models and the issues that have been reported. 2011. The 2011 LML Duramax is one year that some owners have had issues with.As a result, you have to be careful while buying some Duramax models from the undermentioned years. The following are the years and their problems: LB7 Duramax (2001-04) LB7 Duramax was the first generation of the V8 Duramax engine and it did quite well. It was reliable and gave quite a raw feel like the one that diesel enthusiasts crave from ...Aug 19, 2008 ... What you say might be true. My '05 doesn't get the mileage I expected. Unloaded on the freeway will get maybe 18. Average for everything ...The Duramax block and heads are supplied from reliable vendors of General Motors. [vague] This engine was initially installed in 2001 Chevrolet and GMC trucks, and has …And you stop noticing everyone you pass-checking you out as you drive by. H1 Duramax TurbodieselA 2-inch body lift was required to fit the Isuzu/GM-designed 6.6L Duramax where the original 6.2/6 ...Everybody loves free things. And they're easier to find than you'd think! Here's a list of the top 50 free items you can get this year. What’s that you say? You like free things? W...The 2007 model year marked significant changes across the GM truck lineup. With the all-new Chevrolet Silverado and GMC Sierra 1500 (1/2-ton) models already introduced for 2007, the all-new Heavy-Duty version of the GM trucks were released roughly mid-model year (often referred to as a 2007.5). ... The Duramax LMM is a durable …Once the OBS was discontinued, the Silverado truck took over in 1999. However, the Cateye didn’t get released until a few years later. Looking at similarities, both of these Chevy models are considered quite dependable. The fact that the C/K Series was produced for ten years proves that it was reliable and popular.Duramax Engines Through the Ages. Several Duramax engines were produced throughout the years to comply with ever-shifting EPA emissions standards. First up is the LB7, which first saw the light of day in 2001. Duramax LB7. Source: Truck Trend. The LB7 was the first Duramax engine and was made from 2001–2004.The first generation Duramax, the 6.6L LB7 engine, produced 235 horsepower and 500 lb-ft of torque. Over the years, these numbers have increased dramatically. In the latest iteration, the 6.6L Duramax offers 445 horsepower and 910 lb-ft of torque, which highlights the continuous improvement in power and performance.Chevrolet Silverado 2500 HD LTZ Crew Cab Pickup. The LML Duramax shocked its rivals when it was revealed, offering 397 horsepower and 765 lb-ft of torque while simultaneously lowering emissions and improving fuel economy. A new, improved engine block casting was used. GM increased oil film thickness by changing the main …The 2007 model year marked significant changes across the GM truck lineup. With the all-new Chevrolet Silverado and GMC Sierra 1500 (1/2-ton) models already introduced for 2007, the all-new Heavy-Duty version of the GM trucks were released roughly mid-model year (often referred to as a 2007.5). ... The Duramax LMM is a durable …4-Inch Exhaust System: $260. Nearly all of the exhaust systems available for the LBZ Duramax can also be used on the LB7 (’01-‘04), LLY (’04.5-‘05) and even the LMM (’07.5-‘10). Diamond Eye Performance ’s 4-inch diameter, downpipe-back, aluminized exhaust system (shown) is one of these systems. Depending on where you shop, it will ...Written By: L.T. Tolman. We’re in the middle of a three-part journey which takes a deep dive into the most popular late model diesel powerplants used in pickup trucks, and todays subject will be the various …Whatever its year or generation, every Duramax is a 6.6L V8 unit. Unlike Cummins or Ford, who altered key engine features such as displacement, cylinder head design or fuel injection throughout the years, GM has retained the same general layout from the beginning. The LB7 was the first Duramax engine, first introduced in year 2001.The GM L5P Duramax is a turbo-diesel engine produced by General Motors for use in full-size heavy-duty (HD) pickup trucks. Displacing 6.6 liters in a V-8 configuration, the L5P is part of a new ...The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.And you stop noticing everyone you pass-checking you out as you drive by. H1 Duramax TurbodieselA 2-inch body lift was required to fit the Isuzu/GM-designed 6.6L Duramax where the original 6.2/6 ...

Your mileage may vary, but so far the 3.0L Duramax hasn’t quite lived up to the 33-mpg hype. We’ve seen trucks come close in 99-percent, steady-state highway cruising, but most hand-calculated fuel economy numbers for 4x2 model Silverados range from 27-mpg to 31-mpg.. Under deck lattice

years of duramax

What is the Best and Worst Year for the 6.6 Duramax? Worst years (2001-2009) 6.6 Duramax has a long production history. We recommend you avoid any vehicle fitted with a 2001 down to 2009 Duramax engine. For the 6.6 Duramax, the newer models are built with improved performance in mind. The first engine was the Duramax LB7 found in … The name Duramax was chosen for the new engine to signify durability and maximum power, cleanliness, and fuel economy. The new engine created and built by DMAX Ltd was a 6,599 cubic centimeter (6.6 Liter), direct-injection, turbo-charged Diesel V8 with 90-degree placement, aluminum cylinder heads, and 32 overhead valves. Apr 14, 2023 ... ... Duramax https://bnks.pw/oilcooler Shop 2020-2023 Duramax Parts https ... 696K views · 1 year ago #mechanicalengineering #diesel #engineering ...Why are These Years Included In the List of Duramax Years to Avoid? 1. 2001 to 2004 Duramax LB7. Engine Type: 6.6-liter V8 with Four Cylinder Valves: The LB7 was extremely significant because it was the first iteration of the Duramax engine. It has four valves per cylinder and a 6.6-liter V8 engine. Moreover, it has an aluminum head …I’ve compiled many reports from various forums and blogs. According to them, I recommend avoiding the following Duramax year models: 2001 – 2004 Duramax LB7. 2004.5 – 2005 Duramax LLY. 2006 – 2007 Duramax LBZ. 2008 – 2010 Duramax LMM. 2007 – 2012 Duramax LML. These specific engine models have received a lot of complaints.This 2005 Silverado HD looks plenty sharp. In total, there are still around 1 million GMT-800 trucks still in service. Introduced in 2001 on GM HD trucks, a Duramax FICM easily functioned for 10-15 years without fail. Now twenty-plus years old, it's common for the FICM in 2001-2005 Duramax-powered GM trucks to retire unexpectedly.2006-2007 LBZ has the problems from previous generations fixed, and now the weak link is pistons. These also have 6 speed transmissions instead of the 5 speeds. 2007.5-2010 LMM has the DPF system but is otherwise the same as the 2006-2007 LBZ. 2011-2016 LML has DPF and DEF. Changed the injection pump from a CP3 to a CP4.#3 · Dec 13, 2020. Personally, as of now, the LML years (11-16) are the only ones that I would try to avoid unless the CP4 was replaced with a CP3. The L5P’s seem to be pretty …November 20, 2023 by Alex Jones. Duramax started using def in their diesel engines in 2011 for compliance with federal emissions regulations. Duramax implemented def to reduce nox emissions and meet stricter epa guidelines on diesel exhaust fluid emissions. Diesel engines are popular due to their long-lasting performance and fuel efficiency.Jul 6, 2021 · LB7: 2001 – 2004. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. In general, it’s a very durable and reliable engine. However, as the first models hit the 100,000-mile mark, some issues cropped up. Injector failure was a common problem on the LB7 engines. Saids they get better every year. Seems to have problems with his 2016 though, brake controller replaced and now steering rack @ 50,000 miles. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles.In this article, we’ll take a deep dive into the different types of Duramax engines, their evolution over the years, and how to choose the right one for your needs. Understanding Duramax Engines Before we dive into the specific models, let’s first take a moment to understand what Duramax engines are all about.Production Years: May 2010 (2011 model year) to October 2016. Vehicles: 2011-2016 Chevy Silverado 2500HD/3500HD. 2011-2016 GMC Sierra 2500HD/3500HD. …As a result, you have to be careful while buying some Duramax models from the undermentioned years. The following are the years and their problems: LB7 Duramax (2001-04) LB7 Duramax was the first generation of the V8 Duramax engine and it did quite well. It was reliable and gave quite a raw feel like the one that diesel enthusiasts crave from ...Here is a list of the best Duramax year models: 2010-2017 Duramax LGH. 2017-2021 Duramax L5P. 2019-021 Duramax LM2. 2014-2021 Duramax LWN. And here are the Duramax year models to avoid: 2001-2004 Duramax LB7. 2004-2005 Duramax LLY: 2006-2007 Duramax LBZ.In conclusion, the Duramax engine is reliable and durable overall, but certain years offer more reliable performance than others. The best years are 2001-2004, 2006-2007, and 2011-2016, while the worst are 2005, 2008-2010, and 2017-2020. It is recommended to avoid cars with these engines, if possible, to get the most reliable …The Duramax engine has a history that runs deep. It has the following still to this day and continues to up expectations in terms of power and everything else. While it's history stretches back to 1982, we are going discuss the more modern years. The 6.6L was introduced in 2001 and replaced the 6.5L and the company hasn't looked back since..

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