Years of duramax

Discover the evolution and unique features of Duramax engines, from the pioneering LB7 to the cutting-edge L5P. Understand key differences and make an informed decision for your truck's diesel engine needs. ... and innovation, Duramax engines have been a staple in the automotive industry for years. Fast forward to the present day, and …

Years of duramax. For the last 20 years, GM trucks are known for their combination of Duramax diesel engines and Allison transmissions. They are known for their durability and power. In the past, GM Duramax trucks also had manual transmission but from 2007. the automatic Allison transmission is the only option.

The GM Duramax 3.0L I-6 LM2 is a turbo-diesel engine produced by General Motors for use in various vehicles, primarily full-size half-ton pickup trucks and full-size SUVs. ... 2019 model year ...

You might not run a marathon, but you can meet your smaller goals.A charge-off on your credit report means the original creditor has given up on trying to collect the debt and is going to write it off as a loss. However, that does not mean you ar...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 2015 Chevrolet 2500HD powered by a Duramax 6.6-liter turbo-diesel V8 engine offers a towing capacity of 17,900 pounds, while the model featuring a gasoline-fueled Vortec 6.0-li...The next few generations of the Duramax delivered solid upgrades to the design. Most companies would have made these running changes, but GM identified each revision as a different model. The next revision, referred to as the LLY, was a mid-year change in 2004. The easiest way to tell whether the engine is an LB7 or an LLY is by the valve covers.

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.The years to avoid Duramax engines are 2001, 2002, and 2004 due to injector and turbocharger problems. These years have shown higher rates of engine failures and costly repairs. Duramax engines are known for …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.Duramax History, Lesson 3: LBZ. December 10, 2018; Story By Mike McGlothlin; By the time the LBZ came along, the LB7’s injector issues had long been solved and the overheating issues associated with the LLY were a thing of the past. This engine’s beefier block casting, stronger connecting rods, higher pressure common-rail fuel …Apr 22, 2009 · Newer body style ones have a tone of emissions junk on them. This year is the best IMO. Jason. 2006 Silverado 2500HD LBZ CC SB. Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns.

rynburns. • 8 yr. ago. The LBZ is the best Duramax chevy ever built. Non invasive emissions equipment, easier to work on (for the most part) and easily an acceptable ammount of power. I would only change a couple things if I had one; the stupid fan shroud thing that bolts to the heads/block would go for sure, it makes life a pain in the ass ...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.In terms of specs, the big changes are the peak power and torque figures, with the new 3.0L I6 LZ0 turbodiesel Duramax engine producing a maximum of 305 horsepower at 3,750 rpm and 495 pound-feet ...Here are a few top places that hire 14 and 15 year olds as employees, plus a few other money-making ideas! Start making money this month. Home Make Money Looking for places that h...History was made in January 2001 when General Motors introduced its first Duramax diesel engine for the 2002 model year Chevrolet Silverado and GMC Sierra heavy-duty trucks —a 6.6-liter V-8...With that said, the LMM was slightly more powerful than the LBZ, putting out an extra five horsepower and 10 ft/lbs. of torque. Like its predecessor, the LMM Duramax was a sturdy motor, responded well to modifications, and could handle up to 600 horsepower before things started to break.

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Well, the life expectancy of a Duramax 6.6 is around 2,00000 miles without any major repair. But it can last up to 4,00000 if properly maintained. So, the exact life expectancy of a Duramax depends on maintenance. Properly maintained and poorly maintained vehicles’ life expectancy is completely different.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 LBZ engine is more powerful, with 360 horsepower and 650 lb-ft of torque at 1600rpm. On the other hand, the LLY engine has 310 horsepower and 605 lb-ft of torque at 1,600rpm. So, if you’re looking for more power and performance, the LBZ engine is the way to go. The LBZ Duramax has an engine capacity of 6.6 liters, providing enough …Basic Operation Principles. Not only was the CP3 used on the Duramax engines from 2001-2010, the Dodge Cummins has been using its common rail technology since 2003. The radial three piston design is gear driven off the engine. Obviously, its main purpose is to create high pressure for the fuel rail, which feeds fuel to the individual …Jan 26, 2022 ... ... :25 Under The Truck 14:29 Ending. 2001-2007 Duramax LB7/LLY/LBZ Buyers Guide. 34K views · 2 years ago ...more. Dirty Diesel Customs. 4.67K.

Nov 14, 2018 ... As of 2018, a total of 7 generations of the Duramax diesel have been produced. The LB7 was first introduced in late 2000 for the 2001 model year ...Besides the V8, as of 2019, GM offers an inline six Duramax for the Silverado 1500 and other models. A Duramax engine lasts 250,000 miles or around 20 years on average, but with good maintenance, it can do over 400,000 miles easily. The best years for Duramax are 2006-2007 “LBZ,” and the latest, post 2017 “L5P”.Get 50% off a full year's access to our plethora of analysis and in-depth coverage at TechCrunch+! Hello, TechCrunch friends! As the United States marks Independence Day and rests ...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. Updated: March 21, 2024. The Duramax engine is a diesel-powered motor that was originally introduced in 2001. With more than two million produced, it’s wise to know the best and worst years of the Duramax engine because they aren’t all reliable. In this guide, we …#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 …Apr 22, 2009 · Newer body style ones have a tone of emissions junk on them. This year is the best IMO. Jason. 2006 Silverado 2500HD LBZ CC SB. Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns. The LB7 was introduced in 2001 and used until early 2004 before it was replaced with the LLY Duramax. What Year of LB7 is the Best? Although all years of the LB7 potentially had a few issues, including problems with the head gasket, the LB7 Duramax injectors, and the fuel filter housing o-rings, the LB7 is generally considered a …Jan 1, 2019 · HP Potential: LLY. With the largest version of the factory Garrett GT3788VA turbocharger bolted to it, the LLY (found in ’04.5-’05.5 trucks) has arguably the most tune-only horsepower potential of any Duramax produced between 2001 and 2016. Thanks to its 62.6mm inducer compressor wheel and the tallest turbine vane height (15mm) of any ... 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.

Interestingly, Ram waited eight full years until 2019 to incorporate the CP4 on the 6.7L Diesel and then reversed course relatively quickly, going back to the CP3 in 2021. Here is a list of vehicles that came equipped with CP4 injection pumps – 2011-2023 Ford 6.7L Powerstroke 2018-2021 Ford 3.0L Powerstroke 2011-2016 GM Duramax 6.6L LML/LGH

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.The Duramax engine has had its fair share of ups and downs over the years. While it is difficult to pinpoint a single “best” year for the Duramax engine, there are certainly standout models that have proven to be reliable and powerful. The early years of the Duramax engine, particularly from 2001 to 2004, are often regarded as some of the …What year of Duramax did this come out of? (Intank module) UPDATED I'm new to the diesel world and getting a crash course on it. I've picked up fuel tank with the intank fuel module and need to know what year or year ranges it fits in. Any help on this would help me greatly! Thanks in advance.At the low end of the market, the Cateye is likely to cost at least $10,000. Going for later model years or higher trims will get you closer to $15,000. If you opt for the Duramax version, plus a later model year and a higher trim, you could easily be paying at least $25,000. Aftermarket SupportTen years ago, nobody knew what a 6.6L Duramax engine was. We couldn't tell how they worked, how long they would last, or the power output they'd be capable of making. Ten years, and more than 1.3 ...RPO Regular Production Option Codes (Engine Series) There have been seven Duramax turbodiesel engines since their introduction at the turn of the new millennium: LB7 – 2001 to 2004, 300 horsepower, 520 pound-feet. LLY – 2004 to 2005, 310 horsepower, 520 pound-feet. LBZ – 2006 to 2007, 250 to 310 horsepower, 460 to 605 pound-feet.Just like the previous years, the 2004.5-2005 GM 2500HD/3500HD models came equipped standard with a Vortec 6.0L gas engine and offered two optional engine choices, the 8.1L big block or the …The first Duramax diesel engines were used in '01-model year heavy-duty pickup trucks. The turbo-diesel V-8s displaced 6.6 liters and produced 300 horsepower and 520 pound-feet of torque.

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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.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 …RPO Regular Production Option Codes (Engine Series) There have been seven Duramax turbodiesel engines since their introduction at the turn of the new millennium: LB7 – 2001 to 2004, 300 horsepower, 520 pound-feet. LLY – 2004 to 2005, 310 horsepower, 520 pound-feet. LBZ – 2006 to 2007, 250 to 310 horsepower, 460 to 605 …Oct 9, 2023 · Known for their power, durability, and innovation, Duramax engines have been a staple in the automotive industry for years. Fast forward to the present day, and we have the modern Duramax engines that continue to push the boundaries of performance and innovation. Basic Operation Principles. Not only was the CP3 used on the Duramax engines from 2001-2010, the Dodge Cummins has been using its common rail technology since 2003. The radial three piston design is gear driven off the engine. Obviously, its main purpose is to create high pressure for the fuel rail, which feeds fuel to the individual …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.To build this powerful workhorse, GM partnered with Japanese auto manufacturer Isuzu, and the result was the legendary Duramax V8, which has retained its basic architecture for more than 20 years now.The 2021 and 2022 Colorado model years are great picks and are the most reliable options from the second generation. For 2021 the Colorado received an updated front-end design, a stamped Chevrolet logo across the tailgate, and some minor standard and optional equipment shuffling. It carried over to 2022 unchanged.Ah, New Year's resolutions. They're easy to start, but hard to stick to. Here are 11 tips to help you hit your goals all-year long. Setting New Year resolutions can help you achiev...Oct 11, 2020 · 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. ….

Dec 19, 2022 ... ... years of real world experience is seems to hold up very well. The next ... What Is The Worst Year Duramax Ever Made? EXPLAINED! Truck Master ...Jan 1, 2019 · HP Potential: LLY. With the largest version of the factory Garrett GT3788VA turbocharger bolted to it, the LLY (found in ’04.5-’05.5 trucks) has arguably the most tune-only horsepower potential of any Duramax produced between 2001 and 2016. Thanks to its 62.6mm inducer compressor wheel and the tallest turbine vane height (15mm) of any ... 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 Duramax years to avoid are LB7 from 2001 to 2004, LLY from 2004 to 2006, LBZ from 2005 to 2006, LMM from 2007 to 2010, and the LML from 2011 to 2016. These are the …The next few generations of the Duramax delivered solid upgrades to the design. Most companies would have made these running changes, but GM identified each revision as a different model. The next revision, referred to as the LLY, was a mid-year change in 2004. The easiest way to tell whether the engine is an LB7 or an LLY is by the …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.2017-2019 Chevrolet HD and GMC HD trucks with the L5P Duramax have a max tow capacity of 23,300 lbs. In 2020, GM’s engineers overhauled the trucks and increased tow capacity by 52%. 2020 …Over the years, the GMC Sierra Heavy Duty has built a reputation for incredible performance — especially when it comes to diesel trucks. The Sierra HD was engineered for towing. With GMC’s legendary available 6.6L Duramax Turbo-Diesel V8 engine paired with the 10-speed Allison automatic transmission, the 2023 Sierra Heavy Duty delivers …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 ...May 27, 2022 · The LML Duramax, introduced for the 2011 model year was a powerhouse. Coming out of the gate with 397hp and 765 lb/ft of torque, this Duramax diesel featured an advanced fuel injector design and increased line pressure to 30,000 psi compared to 26,000 on the LMM. Years of duramax, 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. , 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., Engine: 6.6L LLY Duramax V8 with Bosch common-rail injection system. Transmission (s): Allison 5-speed automatic, ZF-6 6-speed manual. Best Year (s): Any year — just be prepared for the possibility of replacing the head gaskets and facing overheating issues if you plan to tow heavy. Price Range: $10,000 to $19,000., The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ..., LML Duramax Specifications Chart. Manufactured Years: 2011-2016. Engine Design: 6.6L 90-Degree V8 Turbocharged Diesel. Transmission: 6-Speed Allison Transmission. VIN Identification:, 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., Feb 22, 2023 · 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. , 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 …, 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., 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., Get 50% off a full year's access to our plethora of analysis and in-depth coverage at TechCrunch+! Hello, TechCrunch friends! As the United States marks Independence Day and rests ..., 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., HP Potential: LLY. With the largest version of the factory Garrett GT3788VA turbocharger bolted to it, the LLY (found in ’04.5-’05.5 trucks) has arguably the most tune-only horsepower potential of any Duramax produced between 2001 and 2016. Thanks to its 62.6mm inducer compressor wheel and the tallest turbine vane height (15mm) of any ..., Dissecting 6.6L Duramax Engines Whether you’re looking for fun or looking to win, the Duramax platform is certainly one to consider. ... “Then, when we build 800-1,000 hp, a year or two later, they’re back wanting to push 1,200-1,400 horsepower. For that reason, if we’re building for 1,000 hp, we’re building for 1,500 hp to be safe ..., Focus on the model of engine for a given year as prior to the introduction of the LML engine in 2011 there were changes every year or two to correct a defect for the prior model engine. The LB7 and early LLY engines were prone to injector failure. These engines also greatly benefit from adding a lift pump., Over the years, the GMC Sierra Heavy Duty has built a reputation for incredible performance — especially when it comes to diesel trucks. The Sierra HD was engineered for towing. With GMC’s legendary available 6.6L Duramax Turbo-Diesel V8 engine paired with the 10-speed Allison automatic transmission, the 2023 Sierra Heavy Duty delivers …, The best years for the duramax were 2011-2016 while the worst years were 2001-2004. During this time, the duramax was plagued with injector and fuel system issues. The duramax engine is a popular choice among truck owners due to its power and reliability., Get 50% off a full year's access to our plethora of analysis and in-depth coverage at TechCrunch+! Hello, TechCrunch friends! As the United States marks Independence Day and rests ..., Mar 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 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., Jan 23, 2022 · 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 ... , 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)., LBZ from 2006 to 2007 comes with a bore and stroke of 4.06 x 3.90 inches, similar to the LML, LMM, and L5P. These 6.6 Liter engines were made from a similar blueprint of the Duramax V-8 Engines. Like LBZ, LMM has a compression ratio of 16.8:1, which enhances the 250-360 hp production at 3200 RPM. Credit: flickr.com., 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 ..., Nov 23, 2014 · 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. , Nov 29, 2018 · 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. , 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., 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., 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., 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 …, The Duramax will get you an addition 4 MPG for highway driving, which means you will need to do a substantial amount of highway driving to recoup the $10,000 cost. Reducing it down to simple math, let’s assume that you drive 10,000 highway miles a year and that gas costs $3.00/gallon. The Duramax will require approximately 333.33 …, The CP4 is a high-pressure fuel pump, or injection pump, that debuted in 2011 in the Ford Powerstroke and GM Duramax engines. The CP4 was an updated model to the incredibly reliable and well-regarded CP3 pump. Unfortunately, the CP4 has long been plagued by failures, warranty claims, and expensive repair bills, even leading to a class …, 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.