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Are there any problems with the LLY Duramax?

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Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

Why is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

What happens when you put your car in limp mode?

The limp mode does often reduce the power and limit the RPM of the engine so you can drive your car to a workshop without damaging the engine. For example, Your engine control unit is detecting that your turbo boost pressure is 2.0 bar when the maximum boost pressure should be 1.3 bar. Overboost may damage your pistons or other internal parts fast.

What kind of transmission does a Duramax diesel use?

It was the first to come bolted to the six-speed Allison transmission which provides a lower cruising RPM and greater fuel efficiency when compared to the five-speed on the LB7 and LLY.

LLY Duramax trucks don’t suffer from the same injector failure problems that LB7 trucks frequently had. Instead, many LLY Duramax problems stem from overheating. A new variable vane turbocharger and an EGR system were also added. Check out our LLY Duramax Specifications chart below for detailed information!

What is the compression ratio of a LLY Duramax?

LLY Duramax Specifications Chart Manufactured Years: 2004-2006 Compression Ratio: 17.5:1 (2004 & 2005) 16.8:1 (2006) Firing Order: 1-2-7-8-4-5-6-3 Turbocharger/Air: GARRETT GT3788VA VARIABLE VANE Turbochar Fuel Injection: Direct Injection High Pressure Common Ra

Why did my Duramax go into limp mode?

I have a 2006 chevy duramax and awhile back the truck went into limp mode. I made it to the dealer and they said it was the ECU. they replaced it and the vane position sensor. they said they could not learn the turbo with the new ECU because it wasn’t a factory turbo. I looked up the part no. for my turbo and it was a factory one.

What kind of turbocharger does LLY Duramax use?

The LLY Duramax utilizes a Garrett variable vane turbocharger (VVT) that has a bigger turbo compressor wheel and taller vanes than other Duramax generations. This makes it a prime candidate for aftermarket upgrades like a tuner.

LLY Duramax trucks don’t suffer from the same injector failure problems that LB7 trucks frequently had. Instead, many LLY Duramax problems stem from overheating. A new variable vane turbocharger and an EGR system were also added. Check out our LLY Duramax Specifications chart below for detailed information!

How big is a LLY Duramax diesel tank?

LLY Duramax Specifications Chart Manufactured Years: 2004-2006 Valvetrain: Overhead Valve (OHV) 4 Valves per cylind Engine Oil Capacity: 10 Quarts With Filter Fuel: Diesel Fuel Tank Size: Short Beds: 26 Gallons Long Beds: 34 Gal

What kind of water pump does a LLY Duramax use?

If you have a 2006 model LLY Duramax, this is the OEM Water Pump you will need to use. They changed designs in 2006 and the new part number is GM 12637105. Sinister Diesel’s Welded Water Pump Kit for 2001-2005 Duramax trucks feature a welded design which helps prevent impeller walk.

Are there any issues with the Duramax fuel pump?

The new injectors available from us and others are updated and do not have the cracking issue. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank.

How many versions of the Duramax diesel engine are there?

All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Each version of the engine has its own issues and quirks, and some are less problematic than others.

What to do about a Duramax 6.6 LB7 engine?

If you are having a problem with your 2001-2004 Duramax 6.6 LB7 diesel engine, please feel free to give us a call. We carry a full line of repair and performance parts for these engines that we install in our shop on a regular basis. Odds are we have run across your problem before and would be glad to help. Call us at 1-877-367-9351.

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Each version of the engine has its own issues and quirks, and some are less problematic than others.

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

What was the code name for the Duramax in 2011?

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

Is there a lift pump for the LLY Duramax?

Although the injector issues of the LB7 Duramax didn’t carry over to the LLY, the second generation Duramax still has its fair share of problems. Just like the LB7, no lift pumps were included on these trucks stock. An aftermarket lift pump like a Fass or Air Dog should be one of the first upgrades you consider.

Why did my 2004 Duramax engine not start?

My 2004 Duramax started and then died like it was out of fuel. Now it won’t start. I have about 1/4 tank of fuel, tried priming it until the batteries died.

In addition to EGR, the LLY switched over to variable-vane turbocharger (VVT) which helped improve engine performance over its predecessor.

What’s the difference between 3.0L Duramax and EcoDiesel?

Shortly after Ram dropped the news on the third-generation EcoDiesel back in June of 2019, GM fired back a few weeks later with all the details on its new, inline-six 3.0L Duramax diesel. We thank both Ram and GM for setting the stage for the statistical shootout that’s about to follow.

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

Are there any problems with my 2003 Duramax?

Thaks for the help. injectors,water pump,headgaskets,injectors again,instrument cluster,steering shaft,pinion seal,and injectors again. I have on 03 with 66,000 on it and know problems. Friend of mine has 03 asmost same truck and know problems with 145,000 on it. Sure love mine. P:S Injectors should be warrantied to 200,000.

The new injectors available from us and others are updated and do not have the cracking issue. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank.

How much power does a Duramax Diesel have?

Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver.

What kind of engine does a Duramax 6600 have?

Steering Wheel AIR CLEANER HIGH-CAPACITY (Included with (LLY) Engine Duramax 6600 Turbo Diesel V8 (Z82) Trailering equipment heavy-duty and…

Is the Chevy Silverado 2500 a good truck?

Strong Diesel, great 5 speed Allison. This Duramax Diesel has been a great truck. It easily towed a 30 foot fifth wheel trailer Very comfortable seats. Was this review helpful? Yes | No 2004 Chevrolet Silverado 2500 HD Crew Cab Specs & Features Based on lowest-priced style.

What kind of engine does a Chevy Silverado 2500HD have?

Equipped with a standard 6.0-liter V8, the 2004 Chevy Silverado 2500HD comes available in Base, LS and LT trim levels. If you’re interested in additional hauling power, you can opt for a gas-powered 8.1-liter V8 or a diesel-powered Duramax turbo V-8.

Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver.

When did the Duramax LML diesel come out?

The chart below follows the progression of the Duramax diesel, from the first LB7 to the more recent LML. The LBZ was introduced in 2006 and eventually replaced the LLY by 2007. The 2006 LLY featured many changes to boost torque.

What is the tow capacity of a LLY Duramax?

LLY Duramax Tow Capacity The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. Conventional tow capacity across all models is 12,000 lbs. 5th Wheel tow capacity varies between years and depends on cab configuration. Numbers generally fall between 15,000 lbs and 16,700 lbs though.

What’s the horsepower and torque of a Duramax?

Duramax Horsepower & Torque by Model Year. LLY: 605 lb-ft @ 1,600 rpm LBZ: 650 lb-ft @ 1,600 rpm The LBZ was introduced in 2006 and eventually replaced the LLY by 2007. The 2006 LLY featured many changes to boost torque.

Are there any Duramax engines in the Chevy Silverado?

The motor, sometimes referred to as Baby Duramax, was slated to be offered in GM’s light duty pickup trucks – the Chevrolet Silverado 1500 and GMC Sierra 1500 – for the 2010 model year. However, after fully completing development of the engine, GM decided not to produce it due to reasons associated with the “economic climate”.

The chart below follows the progression of the Duramax diesel, from the first LB7 to the more recent LML. The LBZ was introduced in 2006 and eventually replaced the LLY by 2007. The 2006 LLY featured many changes to boost torque.

LLY Duramax Tow Capacity The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. Conventional tow capacity across all models is 12,000 lbs. 5th Wheel tow capacity varies between years and depends on cab configuration. Numbers generally fall between 15,000 lbs and 16,700 lbs though.

Is there a 6.6 Duramax that wont start?

Chevrolet: 6.6 duramax wont start all of a sudden . Turns… I have a 2009 chevy 2500HD with the 6.6 Duramax. I started I have a 2009 chevy 2500HD with the 6.6 Duramax. I started the truck with my remote while I was opening my shed it ran for a couple of seconds … read more

Are there any flaws in the Cummins Duramax?

Still, and just as we exposed the shortcomings of the almighty Cummins, the Duramax isn’t without its flaws—some of them catastrophic. For example, did you know the injection pump on the LML version is prone to coming apart and wrecking the entire high-pressure fuel system when it does?

Are there any problems with the Duramax diesel engine?

Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

What was the problem with the LBZ Duramax in 2006?

Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years. The concern was that the glow plug module would over cycle the glow plugs, creating a scenario in which the tip of the glow plug could actually deform and/or break off in the engine.

Are there any problems with the Duramax water pump?

This seems to be inherent of the factory water pump design. Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

Although the injector issues of the LB7 Duramax didn’t carry over to the LLY, the second generation Duramax still has its fair share of problems. Just like the LB7, no lift pumps were included on these trucks stock. An aftermarket lift pump like a Fass or Air Dog should be one of the first upgrades you consider.

When does a LLY Duramax water pump fail?

While the seal issues found on LB7 trucks have been largely solved, the LLY Duramax can still suffer from water pump failure. Over time and at higher mileage, the seals in the factory water pumps can fail. This frequently occurs after 80-100,000 miles.

What causes a Duramax diesel truck to overheat?

Its restrictions cause excess heat and force the turbocharger to work harder than necessary. The LLY experiences more overheating compared to other generations of the Duramax diesel because of its inadequate cooling system. They have the smallest radiators and fans found on any Duramax diesel truck.

What’s the RPM on a 2005 GMC Duramax?

Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.

While the seal issues found on LB7 trucks have been largely solved, the LLY Duramax can still suffer from water pump failure. Over time and at higher mileage, the seals in the factory water pumps can fail. This frequently occurs after 80-100,000 miles.

What makes a Duramax LB7 diesel so special?

The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

Is the GMC Duramax compatible with diesel fuel?

The Detroit News reports that GM is now facing a class-action suit alleging its 6.6-liter Duramax engine found in 2011-2016 Chevrolet and GMC models is not compatible with US diesel fuel.

The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

What kind of transmission does a Duramax pickup have?

Nearly all Duramax powered pickup trucks were equipped with the Allison 1000 automatic transmission, with the five-speed version running from 2001 to 2005, and the six-speed starting in 2006 and running until 2019.

What kind of differential does a Duramax LB7 have?

At a stock power level, the stock Allison usually does an OK job at transferring the torque from the flywheel to the rear differential, but even a bone stock LB7 can put a hurting on the Allison, so you can only imagine what happens when you turn up the wick or hook up an oversized as many truck owners often do.

Still, and just as we exposed the shortcomings of the almighty Cummins, the Duramax isn’t without its flaws—some of them catastrophic. For example, did you know the injection pump on the LML version is prone to coming apart and wrecking the entire high-pressure fuel system when it does?

Are there any problems with the Duramax fuel pump?

It can also be relatively difficult to prime the fuel system once air has been introduced into the system, such as when the fuel filter is changed. The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water pump failures for Duramax engine are somewhat common.

Are there any concerns about the aluminum cylinder heads on the Duramax?

The truth of the matter is that there are no concerns regarding the aluminum cylinder heads on any generation of the 6.6L Duramax. With over 1,000,000 Duramax engines on the road today, the aluminum cylinder head design has yet to be identified (with any credibility) as an inherent problem for Duramax owners.

Where is the CP3 injection pump in a Duramax?

The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine.

Are there any issues with the Duramax check engine lights?

Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

Are there any problems with the Duramax engine?

The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants. Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations.

What kind of pump does a Duramax cp4.2 use?

Like all Duramax engines from ’01-’10, the LML was also void of a lift pump from the factory. This means that not only does the CP4.2 have to pressurize fuel as high as 29,000 psi before sending it to the rails, but it also has to pull its low pressure fuel from the tank.

What causes the injector on a Duramax to fail?

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. The solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the injector.

What causes the crankshaft on a Duramax to crack?

Or how about the fact that the rods in the LB7 and LLY engines can bend with added power and the LBZ and LMM mills are notorious for cracking pistons? Discover the worst failure point (s) of your Duramax in the article that follows, along with how to address it. 1. Snapped Crankshaft

What kind of tires does a Duramax LLY have?

This highly modified LLY Duramax sits on 38×15.5 tires courtesy of a 9.5 lift. Jason didn’t stop there, this truck has the performance to back it!

When did the second generation Duramax come out?

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.

How many miles does a LLY Duramax engine get?

With that being said, the block and internals on the LLY Duramax have stood the test of time and can easily surpass the 300,000 mile marker. With common and consistent maintenance, these engines are superbly reliable, especially when left in stock form.

What are the problems with the Duramax LB7?

One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. 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.

When did I buy my new GMC Duramax?

I purchased a new 2020 GMC Denali 2500 with the Duramax back around March 14, 2020. The truck that I bought had right around 300 miles on it when I bought it. At 521 miles, I got the first CEL and immediately took it to my local GM dealer that happened to be a Chevrolet Dealer.

When did the GMC Duramax Denali 2500 come out?

Enter your ride HERE to be a part of this months Ride of the Month Challenge! I purchased a new 2020 GMC Denali 2500 with the Duramax back around March 14, 2020. The truck that I bought had right around 300 miles on it when I bought it.

What happens when a Duramax engine goes down?

Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.

What kind of compression ratio does a Duramax have?

Thanks to a 17.5:1 compression ratio (the highest of any other engines in the Duramax lineage), extreme amounts of low-rpm cylinder pressure (i.e. torque) can be present when you’ve more than doubled the factory horsepower and torque rating.

Are there any issues with the Duramax primer button?

Under the primer button there are some orings that fail on a regular basis. This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs.

Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.

Thanks to a 17.5:1 compression ratio (the highest of any other engines in the Duramax lineage), extreme amounts of low-rpm cylinder pressure (i.e. torque) can be present when you’ve more than doubled the factory horsepower and torque rating.

Are there any problems with the Commons 6.6L Duramax Diesel?

Common Problems with the 6.6L Duramax Diesel. The 6.6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform. While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation.

It can also be relatively difficult to prime the fuel system once air has been introduced into the system, such as when the fuel filter is changed. The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water pump failures for Duramax engine are somewhat common.

What to do if your Duramax injector is not working?

To relieve this problem, the wiring harness (or affected portion of the harness) will need to be replaced/repaired. Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone.

What’s the towing capacity of a Chevy Duramax?

With a ball hitch, the truck had a maximum towing capacity of 12,000 pounds. Equipped with a fifth-wheel or goose-neck hitch, it could haul up to 16,700 pounds.

What are the specs of a 2005 Chevy Duramax?

Finally, the four-door, crew-cab truck was 256.2 inches long, 79.7 inches wide and 77 inches tall, with a 167-inch wheelbase. The regular cab’s interior offered 41.0 inches of headroom, 65.2 inches of shoulder room, 61.4 inches of hip room and 41.3 inches of legroom.

Nearly all Duramax powered pickup trucks were equipped with the Allison 1000 automatic transmission, with the five-speed version running from 2001 to 2005, and the six-speed starting in 2006 and running until 2019.

With a ball hitch, the truck had a maximum towing capacity of 12,000 pounds. Equipped with a fifth-wheel or goose-neck hitch, it could haul up to 16,700 pounds.

Finally, the four-door, crew-cab truck was 256.2 inches long, 79.7 inches wide and 77 inches tall, with a 167-inch wheelbase. The regular cab’s interior offered 41.0 inches of headroom, 65.2 inches of shoulder room, 61.4 inches of hip room and 41.3 inches of legroom.

What’s the weight of a 2005 Chevy 2500HD?

The 2500HD’s gross vehicle weight rating topped out at 9,200 pounds and it could handles payloads of up to 3,964 pounds. With a ball hitch, the truck had a maximum towing capacity of 12,000 pounds.

What are the dimensions of a Chevy Duramax?

These front-seat dimensions remained constant in the extended- and crew-cab models. The extended cab’s rear seat provided passengers with 38.4 inches of headroom, 66.3 inches of shoulder room, 61.5 inches of hip room and 33.7 inches of legroom.

What kind of engine does a GM Duramax have?

It’s been said before, but that doesn’t make it any less true: The 6.6L Duramax is one heck of an engine. In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use.

I went to a 2005 3500 SRW (GVWR of 9900 lbs) and finally a 2011 SRW with a GVWR of 11,600 lbs. I added air bags to the truck to level it and improve the ride.

It’s been said before, but that doesn’t make it any less true: The 6.6L Duramax is one heck of an engine. In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use.

My 2004 Duramax started and then died like it was out of fuel. Now it won’t start. I have about 1/4 tank of fuel, tried priming it until the batteries died.

Why does my Duramax not run over 30 mph?

Took it to dealership because of a surge at idle, and at 55 to 60 mph. Dealership replaced fuel pressure regulator. $900.00 dollars later and a half mile down … read more I have a 2003 Chevy 4500. New injectors, new fuel filter. Will not run over 30 mph. Could it be a lift pump?

When does a Duramax chev.p.u.lose power?

Duramax Chev. P.U. (2003) loses fuel prime and motor stops running at low RPM or at an idle. No visible leak around filter area. Fuel pressure … read more Vocational, Technical or Tra… Hi, I just purchased a 2004 Kodiak C4500 crewcab with the Duramax diesel engine mated to an Allison with 4:44 gear ratio. What rpm do you … read more

What are the most common LLY Duramax engine problems?

The 6 Most Common LLY Duramax Problems. 1 1. LLY Bent Rods. While the LLY made competitive performance numbers back in 2004, the engine is certainly not competitive to the modern day diesels. 2 2. Head Gasket Failure – LLY Duramax. 3 3. EGR Valve Failure. 4 4. Glow Plug Failue – 2006 LLY Duramax. 5 5. Overheating in Pre-2006 Models.

Are there any problems with the LLY engine?

However, there are a number of new issues that have arisen due to the changes, and a number of shared problems with the LB7. Additionally, 2006 LLY models are very comparable to the LBZ engine, creating a number of overlapping common problems there as well.

Can a 6.6 liter diesel engine start in cold weather?

At 6.6 liters, these engines (and all other diesels) are big hunks of metal. Because metal absorbs heat, and there is so much of it, starting a diesel engine in cold weather can be a challenge. The internal combustion temps have difficulty getting hot enough to ignite fuel and start the engine.

However, there are a number of new issues that have arisen due to the changes, and a number of shared problems with the LB7. Additionally, 2006 LLY models are very comparable to the LBZ engine, creating a number of overlapping common problems there as well.

At 6.6 liters, these engines (and all other diesels) are big hunks of metal. Because metal absorbs heat, and there is so much of it, starting a diesel engine in cold weather can be a challenge. The internal combustion temps have difficulty getting hot enough to ignite fuel and start the engine.

What are common problems with Duramax Diesel?

This seems to be inherent of the factory water pump design. Overheating. Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

Which duramax is best?

Best Duramax Fuel Filters of 2020 – Complete Buyer’s Guide OUR TOP PICK: ACDelco TP3018 Professional Fuel Filter with Seals RUNNER-UP: iFJF TP3018 Fuel Filter BEST BUDGET OPTION: iFJF 1R-0750 Fuel Filter BEST 2008 DURAMAX FUEL FILTER: 6.6 Duramax Diesel Fuel Filter with Seals by ATRACYPART BEST 2017 DURAMAX FUEL FILTER: iFJF TP1015 Fuel Filter

Where is the fuel pump on a Duramax Diesel?

The pump is located in the engine valley (between the heads, at the front). Don’t worry about it or mess with it, just yet.

What size motor does a Duramax have?

The Duramax V8 engine is a General Motors Diesel V8 engine family for trucks. The 6.6-liter Duramax is produced by DMAX, a joint venture between GM and Isuzu in Moraine, Ohio. The Duramax block and heads are poured at The Defiance GM Powertrain foundry in Defiance County, Ohio.

Which is the best lift pump for a Duramax?

The FASS Titanium Signature Series Lift Pump is an excellent upgrade for any Duramax. When GM changed body styles with the 2008 Duramax, the redesign coincided with some new regulations from the EPA regarding emissions equipment on light duty trucks.

What causes a Duramax injection pump to fail?

As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.

The FASS Titanium Signature Series Lift Pump is an excellent upgrade for any Duramax. When GM changed body styles with the 2008 Duramax, the redesign coincided with some new regulations from the EPA regarding emissions equipment on light duty trucks.

As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.

When did the first Duramax V8 engine come out?

Duramax Engine LB7 2001 to 2004 The first Duramax V8 was introduced in 2001 and was given the code name LB7. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

Duramax Engine LB7 2001 to 2004 The first Duramax V8 was introduced in 2001 and was given the code name LB7. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

Are there any major problems with the L5P duramax?

Mechanically, the L5P Duramax is stout and very few major problems have been reported. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again.

What is the diagnostic code for a Chevy Duramax?

Below are common check engine light trouble codes for the Chevy/GM Duramax diesel. This list has been updated to includes Chevy/GM Duramax diagnostic trouble codes. At Thoroughbred Diesel we are a real diesel performance and repair shop that offers free advice. Call us at 1-866-737-4966 with any questions you may have about your diesel.

What kind of exhaust gas does a Duramax use?

* Exhaust gas recirculation (EGR) was used on ’06-’07 trucks (as well as the ’04.5-’05.5 LLY), but the diesel particulate filter and diesel oxidation catalyst had not debuted yet. A brand new body style, vastly improved interior, and a fresh version of the Duramax graced the ’07.5 to ’10 model year 2500 HD and 3500 trucks.

When did the LMM Duramax Diesel come out?

A brand new body style, vastly improved interior, and a fresh version of the Duramax graced the ’07.5 to ’10 model year 2500 HD and 3500 trucks. In order to meet tougher emissions standards, the LMM Duramax would be the first 6.6L to dawn a diesel particulate filter, diesel oxidation catalyst and more extensive EGR system.

How can I Keep my Duramax Diesel pump healthy?

However, there are measures you can take to keep the pump happy and healthy, the first being to always buy your diesel from a high-traffic, reputable filling station that’s known to dispense good, clean fuel. Second, always change the fuel filter at or before the recommended service interval.

What causes a LLY Duramax fan to overheat?

Despite these issues, a majority of LLY Duramax overheating is actually caused by other common LLY Duramax problems. Blown head gaskets, water pump failure, fan clutch failure, and even a dirty or clogged radiator can be the root cause of your overheating issues.

What causes a Duramax to overheat in the summer?

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). Overheating often occurs as a result of a fan clutch failure, preventing the engine fan from providing supplemental airflow as necessary to keep the engine from overheating.

It was the first to come bolted to the six-speed Allison transmission which provides a lower cruising RPM and greater fuel efficiency when compared to the five-speed on the LB7 and LLY.

Its restrictions cause excess heat and force the turbocharger to work harder than necessary. The LLY experiences more overheating compared to other generations of the Duramax diesel because of its inadequate cooling system. They have the smallest radiators and fans found on any Duramax diesel truck.

When does a Duramax LML / LGH CP4 pump failure?

If the body casing of the pump is cracked, as in the picture, or you find metallic debris on the fuel pressure regulator screen (pictured right) this is indicative of a pump failure. InjectorsDirect.com has put together complete repair solution for LML/LGH CP4 Pump failure using all OEM parts (pictured below.)

Why does my Duramax say range shift inhibited?

NSBU connecters are very well sealed form the factory. they have silcone inside the connector. they are very hard to disconnect. you could have bend or kinked shift linkage. I have replaced the NSBU switch, filled the transmission fluid, and it is still blinking the “Range Shift Inhibited” when I shift into Reverse.

Why is my Chevy Duramax not going into gear?

Took my truck to the dealership for them to fix. It is supposedly fixed. The problem they say was the ignition switch inside the steering column. They say that the voltage was misfiring or misreading and not sending a good signal for it to enage into gear.

How long can a Duramax go out of service?

This special policy covers the condition described above for a period of 7 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.

Is there a year to avoid a Duramax Diesel?

Thinking of upgrading from my current 2011 Duramax to a newer year model 2500 Diesel. Nothing In later years to “avoid”. Drivetrain is the same as your 2011 up til 2016. 2017 to current is L5P platform and looses the infamous CP4 pump

To relieve this problem, the wiring harness (or affected portion of the harness) will need to be replaced/repaired. Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone.

Are there any problems with my 2005 Chevy Silverado?

First dealer had it for a whole day and said it was fine, they saw NO smoke, then gave me some BS that any repairs would have to be done at a previous dealer (another city) since they changed 2 injectors already. Well after about another month it got worse and I called the GM warranty line.

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. The solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the injector.

First dealer had it for a whole day and said it was fine, they saw NO smoke, then gave me some BS that any repairs would have to be done at a previous dealer (another city) since they changed 2 injectors already. Well after about another month it got worse and I called the GM warranty line.

How many KMS does a Silverado Duramax get?

There is about 105000 kms or 65000miles. The black smoke is gone now, just left with a lack of power and crappy fuel economy. I talked to a guy last night that has the same truck, but an 07 and he gets about 650kms to a talk, I get 300kms! I’ll see if I can get one of those filters locally.

Is there a problem with the glow plug on my Duramax?

Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone. Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years.

There is about 105000 kms or 65000miles. The black smoke is gone now, just left with a lack of power and crappy fuel economy. I talked to a guy last night that has the same truck, but an 07 and he gets about 650kms to a talk, I get 300kms! I’ll see if I can get one of those filters locally.

Why does my 2005 Chevy 2500 HD not start?

My 2005 Chevy 2500 HD won’t start. Engine won’t turn over with key at all. Batteries are hot. You can take a power probe and shoot 12v to starter solenoid wire and it will crank and run fine. I traced that wire back to the fuse panel under the hood on the driver’s side. There is a CRANK fuse as well as a starter relay in that panel.

What causes head gasket failure on LLY Duramax?

Head Gasket Failure – LLY Duramax The LLY has the largest turbo in it out of any other 6.6L Duramax variants. Outside of it being the largest turbo, it had the largest compressor wheel and the tallest exhaust vanes. The end result is having an extremely efficient and high-flowing turbocharger.

What are the symptoms of a Duramax head gasket failure?

Head Gasket Failure Symptoms 1 White smoke from the exhaust 2 Leaking water out of the tailpipe 3 Discolored oil and foamy residue in the oil cap 4 Engine overheating 5 Coolant leaks on the engine block and garage floor

Where was the 2005 Chevy Silverado 2500HD purchased?

No accident or damage reported to CARFAX. 1st owner purchased on 04/02/05 and owned in IL until 09/26/07 • 2nd owner purchased on 11/03/07 and owned in WI until 03/01/08 • 3rd owner purchased on 03/01/08 and owned in MN until .

When did the Chevy Silverado 2500HD come out?

1st owner purchased on 05/26/05 and owned in MT until 12/21/09 • 2nd owner purchased on 12/21/09 and owned in MT until 02/11/10 • 3rd owner purchased on 02/11/10 and owned in WA until .

What’s the tow capacity of a LLY Duramax 5th Wheel?

The LLY Duramax was sold from 2004-2006 and tow capacity varies between model years. Conventional tow capacity across all models is 12,000 lbs. 5th Wheel tow capacity varies between years and depends on cab configuration. Numbers generally fall between 15,000 lbs and 16,700 lbs though.

When is the p0234 diagnostic trouble code detected?

When is the P0234 code detected? This diagnostic trouble code (DTC) P0234 will set if the boost pressure sensor signal is above the predicted range. The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with accelerator pedal position (APP) and engine speed.

If you have a 2006 model LLY Duramax, this is the OEM Water Pump you will need to use. They changed designs in 2006 and the new part number is GM 12637105. Sinister Diesel’s Welded Water Pump Kit for 2001-2005 Duramax trucks feature a welded design which helps prevent impeller walk.

When did GMC Duramax lose power under load?

In 2012 there was a P1093 code and the dealer invoice states “…low rail pressure during enrichment. Command high fuel rail pressure, pressure drops. Follow diagnostic chart, test system pressure, relief valve failed” so they replaced the FPRV.

Which is the best tuner for a LLY Duramax?

The Bully Dog GT Platinum Diesel Tuner is an incredible tuner that will connect directly to your LLY Duramax engine’s unlock cable, enabling you to unleash your truck’s full power. This maximized power will noticeably improve many aspects of your truck’s performance.

When did GM start making 6.6L LLY durmax engines?

GM was producing 6.6L LLY Durmax engines for just a year and a half, from midway through 2004 to 2005. If your truck falls under those model years, this article is for you. When you have installed a tuner, you can expect to see the following changes:

In addition to EGR, the LLY switched over to variable-vane turbocharger (VVT) which helped improve engine performance over its predecessor.

How many miles does a Duramax dually have?

I friend of mine is selling his ’09 Duramax dually. Its in great shape, has 130k miles on it. He recently had the injectors changed. Its his daily driver, he has never towed anything or really worked the truck; honestly I still can’t figure out why he bought it. I’m coming out of a 2006 F250 with a 6.0h no.

When did the Duramax TCM go out Dan’s?

2013 duramax tcm went out Dan’s got me one in the mail first thing. Shipped with a tracking #, kept in good contact with me. Got the programmed on 5 min install truck runs great. My truck threw a “Lost communication with TCM code” wouldn’t move anywhere and no gears.

What causes a Duramax diesel engine to heat up?

When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.

What is glowplug fault on GMC Duramax Diesel?

P133F is #8 glowplug hot resistance fault. Did you determine if the Elevated Idle is enabled? Are you using remote start? If not, are you giving waiting for glowplug light to go out before turning key to ‘start’? Elevated idle was not activated….it is now though.

What’s the Check Engine light on a Duramax?

Started up fine. Only thing i noticed was that the oil pressure was pegged out at 120 and the battery was around 10 or 11 marker on the gauge. Ran and drove fine. Keep in mind the temp was around 18F this morning when i left for work. You will need a scanner to pull the codes.

How to put GM all lights on Silverado?

Fitment Guide: 2003-2007 Classic 2500-3500 Silverado/Sierra INSTALLATION 1. Remove the relays labeled: FOG LP, HDLP-LOW, DRL, HDLP-HI 2. Lay the GM All Lights On circuit board in the location shown (see product images) 3.

How do I get all the lights on in my Chevy 99-02?

For those that want to have all 4 lights come on in the 99-02, all you have to do is tap into and ground the yellow wire behind the passenger side headlight. (Note: Do not cut the yellow wire and ground it.

When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.

Why does my GM Truck start so cold?

Look up piston slap to study it more its mostly from the short piston skirts that allow the piston to rock around more when cold. Also different oils help, i run moble 1 truck 5w30 in my truck with 116k on it. I have heard that gm top end cleaner and the 3m kits work well.

How big is a 6.6L Duramax LLY lift?

Sitting on 35’s with 20×10’s and a 6″ lift, this LLY Duramax features an MBRP Exhaust, EFI Live custom tuning, PPE gauges, ARP head studs and more! It isnt too often you can have the best of both worlds but for Jason W. its his reality. Jason built matching 2005 GMC 2500HD Pickups in both lifted and in street trim.

When did the Duramax 6.6L turbo diesel come out?

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.

How often should I service my 6.6L LLY Duramax?

How often you should service your 6.6L LLY Duramax is going to depend on how much you use it, and what you use it for. Excessive idling, heavy towing, or off-roading will result in the need to perform service more regularly. You should follow the severe service schedule.

The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine.

What causes the injector on a Duramax to leak?

Leaking Injectors—LB7 One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. 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.

What happens when you replace one battery in a Duramax?

When you replace one battery, the other battery will be pulling the new battery down in an effort to pull the weaker battery up. What will likely happen is the older battery will fail eventually, and then it will be replaced, and the process will start all over again. I got 5 years out of my 1st set of batteries and I was very pleased.

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Ruth Doyle