Are there any problems with the GM Duramax?

In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use. Still, and just as we exposed the shortcomings of the almighty Cummins, the Duramax isn’t without its flaws—some of them catastrophic.

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.

When did the Duramax LLY diesel engine come out?

First introduced in 2004, the Duramax LLY engine is a 32-valve turbocharged diesel engine made popular by the Hummer H1, Chevy Silverado and GMC Sierra. Upgrades over previous years included a Garret turbocharger that allowed General Motors to meet new diesel truck emission standards while maintaining the original power-to-weight ratio.

What are the most common LMM Duramax engine problems?

1 DPF system & active regeneration 2 Leaking transmission lines 3 Fueling / low fuel pressure 4 Piston / crankshaft failure 5 Allison 1000 power limitation

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.

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.

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 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.

What to do if your Duramax won’t start?

If the fuse is o.k. if you have a test light or multi meter test the terminals the fuse plugs into,there should be two terminals in the fuse box.Test for power on one of these terminals while someone is trying to start the vehicle.If you have power then the start circuit is good and the fault is in the starter itself.

When did the LMM Duramax diesel engine come out?

The LMM Duramax refers to Chevrolet Silverado HD and GM Sierra HD trucks equipped with the 6.6L Duramax diesel engine between the years of 2007.5-2010. It was very similar to the LBZ, but it featured an all-new emissions device, a diesel particulate filter.

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.

What was the problem with my GMC Duramax?

As noted in earlier posts, have had the entire DPF/DEF system replaced at 113k miles on my 2014 after having 3 aborted trips and same amount of revisits to the dealer $6.5K. Nothing under warrantee. Primary problem was DEF module was not properly injecting DEF fluid when going up hills .

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 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 kind of connecting rod does a Duramax have?

We’ll be honest, experiencing a tweaked connecting rod in an LB7 Duramax (’01-‘04) or LLY Duramax (’04.5-’05.5) is almost exclusively reserved for engines making double the factory horsepower (or more).

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.

Where did the 2010 Chevy Silverado 2500HD come from?

1st owner purchased on 01/01/10 and owned in IA until 01/11/13 • 2nd owner purchased on 02/07/13 and owned in WI until 09/18/20 • 3rd owner purchased on 11/11/20 and owned in MN until 04/13/21. 1st owner drove an estimated 24,855 miles/year • 2nd owner drove an estimated 14,826 miles/year • 3rd owner drove an estimated 0 miles/year.

How many miles does a 2010 Chevy Silverado drive?

1st owner drove an estimated 0 miles/year • 2nd owner drove an estimated 10,022 miles/year • 3rd owner drove an estimated 16,975 miles/year • 4th owner drove an estimated 0 miles/year • 5th owner drove an estimated 0 miles/year.

What kind of engine does a GMC Duramax have?

I have a 2021 GMC Sierra 1500 AT4 with the 3.0 Duramax that is 4 weeks old with 2500 miles. The following has happened three times. I press the brake, press the start button, the engine turns over for approximately 10 seconds without starting. Each of the three times it has started on the next attempt.

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 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.

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?

Is the 2006 2500HD D / A running fine?

My 2006 2500HD D/A was running fine this past weekend. I parked it in my driveway on Saturday. I moved it to my side driveway on Sunday, took about 5 minutes of running. Shut it off and came back a few minutes later to restart it. It would start very easy, and run for about 2 seconds then die.

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.

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.

Who was the last person to run a mile under 4 minutes?

James Ronald Ryun (born April 29, 1947) is a former American politician and track and field athlete. He won a silver medal in the 1500 m at the 1968 Summer Olympics, and was the first high school athlete to run a mile in under four minutes. He is the last American to hold the world record in the mile run.

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.

What causes fuel starvation in a Duramax Diesel?

Fuel Starvation and/or Air in the Fuel Lines. The Duramax diesel is susceptible to fuel starvation and getting air in the fuel lines. This can be contributed to the fuel filter housing design and the fact that the Duramax does not use a lift pump. Rather, the high pressure fuel pump (injection pump) is responsible for vacuuming fuel from the tank.

Is there a manual transmission on a Duramax?

Manual transmissions are relatively rare for Duramax powered GMC/Chevrolet pickups, the primary reason being the attractiveness of the Allison 1000.

Is the Chevy Silverado 2500 HD crew cab?

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 2003 Chevrolet Silverado 2500 HD Crew Cab Specs & Features Based on lowest-priced style. Safety information is currently not available for this vehicle.

Where was the 2003 Chevy Silverado 2500HD last serviced?

Last serviced in Spokane Valley, WA on 05/04/21 • Vehicle serviced • Oil and filter changed. No accident or damage reported to CARFAX. 1st owner purchased on 07/31/03 and owned in MO until 08/06/09 • 2nd owner purchased on 09/14/09 and owned in MI until 05/26/16 • 3rd owner purchased on 05/26/16 and owned in MI until .

Is the Chevy Silverado 2500 LD 6.0 liter?

They have the same engine and transmission (in 6.0L variant). They have about the same trailering capacity and payload capacity. The hd does have the available crew cab and extended cab long bed. The ld can be 3.73 for better gas milage or can get the 4.10 which is manditory in the hd.

What kind of car is a 2003 Chevy Silverado?

Consumer Ratings Rank Vehicles HP #1 2003 Dodge Ram 1500 Regular Cab 305 #2 2003 Chevrolet Silverado 2500 Regular Ca 300 #3 2003 Chevrolet Silverado 1500 Regular Ca 270 #4 2004 Ford F250 Super Duty Regular Cab 260

What should I do if my Duramax won’t start?

Very slight. Drove 5 miles, had dinner, came out, crank but no start. Held throttle down and still no start. Checked prime, fuel squirted out of vent when loosened. Cranked and held throttle down, started after about 10 seconds.

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 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.

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.

Is there a 2005 GMC 2500HD Duramax Diesel for sale?

RARE TO FIND IN SUCH QUALITY CONDITION, CALL BROWNS NOW!, Duramax 6.6L V8 Turbodiesel, Allison 1000 5-Speed Automatic, 4WD, 10-Way Power Driver’s Seat Adjuster CLEAN CARFAX REPORT AND GREAT CONDITION!!

Why does my Chevy Duramax not turn over?

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.

Are there any problems with the Duramax LMM?

One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and that’s with the pistons. Simply put, they can crack under pressure. There are a lot of factors which dictate the power level where a piston bites the dust, but it’s usually north of 600 horsepower.

What’s the average mileage of a durmax truck?

I have a 2011 GMC 2500 Duramax that currently has 60K miles. I over maintain this truck and love it. What is the mileage life expectancy of a well /over maintained Durmax/Allison truck?

What kind of car is a 2008 GMC Duramax?

Friend is looking to buy a 2008 GMC Duramax 2500 crew, 4×4 auto. Are there any problem areas that he should know about? Thank you for the input is here and there.

Is the Duramax 08 DMAX a good car?

Those being the only 2 things but i’d buy one again in a heart beat! From what I’ve heard, the 08 Dmax is pretty damn good, aside from less fuel mileage than the LBZ, but that’s to be expected with the emissions that all of the big 3 have to meet. I just can’t bring myself to embrace the new body style.

Are there balance rates on a Duramax Diesel?

If you’re big into diesel engines, especially the Duramax diesel engines, like we are, you have probably heard of balance rates. You are likely even familiar with checking them so that you can determine the health of the injectors in your Duramax.

How many miles does a 2005 GMC Duramax have?

A 2005 GMC Goes The Distance! I magine driving your truck 400 miles today, 400 miles tomorrow, and 400 miles every single day for the next 5 years (that’s 1825 days). If you did, your Duramax would have what this truck has – more than 750,000 miles on the odometer.

How many miles has a Duramax truck traveled?

A few Duramax owners have made a living with their truck doing this. This is one of those trucks. This truck would be considered to be in great shape if someone said it had covered just 100,000 miles, but for having traveled the equivalent of 31 times around the Earth, this truck’s condition is truly remarkable.

Friend is looking to buy a 2008 GMC Duramax 2500 crew, 4×4 auto. Are there any problem areas that he should know about? Thank you for the input is here and there.

How big is a 6.6 liter Duramax engine?

2008-2010 GMC Sierra & Chevy Silverado HD 6.6L LMM Duramax Specs Manufactured Years: 2007.5-2010 Displacement: 6.6 Liters or 403 Cubic Inches Engine Weight: 835 Lbs Bore: 4.055″ or 103 mm Stroke: 3.897″ or 99 mm

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”.

When did the first Duramax diesel truck come out?

General Motors made some HUGE waves in the diesel market in 2001 with the release of the first Duramax powered Chevrolet and GMC’s. read more Diesel Power Products has the parts for your GMC or Chevy Truck! General Motors made some HUGE waves in the diesel market in 2001 with the release of the first Duramax powered Chevrolet and GMC’s.

How many horsepower does a GMC Sierra Duramax have?

2008-2010 GMC Sierra & Chevy Silverado HD 6.6L LMM Duramax Specs Manufactured Years: 2007.5-2010 Fuel: Diesel Fuel Tank Size: Short Bed: 26 Gallons Long Bed: 34 Gallo Max Engine Speed: 3,250 RPM Horsepower: 365 horsepower

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.

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.

Why are the Pistons on my Duramax not working?

Low-quality castings from its suppliers and a reduced amount of meat present in the wrist pin area (thanks to the use of wrist pin bushings) are to blame for factory piston failure. In most cases, the cast-aluminum piston cracks along the center line of the wrist pin, as shown above.

What to do if your Duramax crankshaft is weak?

The ultimate fix for the weak factory crankshaft is to replace it with a stronger unit that’s been internally balanced. The billet Callies crankshaft available through Wagler Competition Products is machined from triple heat treated 4330V steel and features reduced rod journal widths for improved strength (which calls for narrower rods).

How many gallons of fuel does a Duramax have?

Depending on the model, you might have between 25 and 40 gallons of capacity, and on most trucks there is a low-pressure fuel pump which sits inside the tank and pushes the fuel toward the engine at a relatively low pressure.

What kind of lift pump does a Duramax have?

This is true on every Duramax from the LB7 in 2001 to the LML in 2016. Interestingly enough, the 5.9 and 6.7 Cummins trucks which were equipped with an almost identical CP3 were equipped with a lift pump, and the newest L5P Duramax has one, all of which suggests a lift pump is an important part of a diesel fuel system.

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.

When to submit a repair order for a 2003 Duramax?

Claims with repair orders prior to May 25, 2004 must be submitted to the Service Contract provider. For 2003 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after October 10, 2006 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin.

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.

Why does my 2005 LLY Duramax not start?

– Fixya Duramax won’t start! My 2005 LLY duramax became hard to start a few days ago. Then today it wouldn’t start at all. Turns over but wont start. The fuel filter primer loses pressure after priming it.

What kind of engine does a Silverado 2500HD have?

April 15, 2020 Some 2020-2021 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P) may have a thumping or knocking sound coming from the rear of the engine. The sound is often more pronounced in the interior of the truck as it’s amplified by the transmission bell housing.

What kind of job does GMC Sierra 2500 do?

Built for heavy-duty, the GMC Sierra 2500 HD is at home on ranches, at construction sites and towing trailers and boats. It also boasts a lot of passenger room for the entire family and their gear. It comes with a number of engine options, which means you can buy the package you need for the job.

What kind of sound does a Duramax diesel make?

Some 2020-2021 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P) may have a thumping or knocking sound coming from the rear of the engine. The sound is often more pronounced in the interior of the truck as it’s amplified by the transmission bell housing.

How many miles does a GMC Sierra 2500HD have?

Mileage: 140,638 miles Body Type: Pickup Color: White Engine: 8 Cyl 6.6 L Accident reported. 1st owner purchased on 11/30/05 and owned in AB until 05/05/17 • 2nd owner purchased on 06/26/17 and owned in WA until 08/16/19 • 3rd owner purchased on 09/25/19 and owned in WA until .

Where was the last serviced GMC Sierra 2500HD?

Last serviced at 182,922 miles in Sheboygan, WI on 11/24/20 • Vehicle serviced • Tire condition and pressure checked • Tires rotated. No accident or damage reported to CARFAX. Number of owners unknown. Last serviced at 319,709 miles in Kennewick, WA on 04/26/21 • Vehicle serviced.

Which is the best 6.6 Duramax engine to buy?

Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. All the problems associated with emissions system and injection pump have been taken care of, and for 2017 GM switched suppliers of the injection pump from Bosch to Denso.

Why does my Duramax say reduced engine power?

If you’ve got a Duramax diesel, the Reduced Engine Power warning could Illuminate for a variety of reasons. There are many different technical service bulletins (TSBs) for Duramax-powered vehicles that mention Engine Reduced Power mode.

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.

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.

What causes white smoke in a GM 6.6L Duramax engine?

A common issue with the GM 6.6L LB7 Duramax engine is white smoke at idle. Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement. INJECTORS STUCK OPEN OR WITH EXCESSIVELY LEAKING NOZZLES DIANOSIS 1.

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.

When does the Duramax 3500 high country come out?

Ordered my new 2021 Duramax 3500 High Country on 11-3-2020. Order completed on 01-25-2021 ready for shipment in Flint Michigan. My delivery date is scheduled for 2-26-2021 to North Carolina. It’s been a long wait. The count is on.

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.

What kind of engine does a Duramax 3500 have?

Duramax Diesel. Engine, Duramax 6.6 L Turbo Diesel V8, B20 Diesel Compatible $7,195 Transmission, Allison 1000 6 Speed Automatic, Electronically Controlled overdrive electronic engine 2017 CHEVROLET 3500 – DURAMAX DIESEL – DUALLY – 4X4!!!

When did the General Motors Duramax engine come out?

Duramax is a series of turbo-diesel engines produced by General Motors for use in pickup trucks, SUVs and vans. First introduced in 2001, Duramax engines range from four, six and eight cylinders in inline (I) or V configurations. A total of 11 Duramax engines have been produced since 2001 globally, including:

What are the features of a Chevy Duramax Diesel?

Duramax Diesel Dually. Bose Sound System, Heated and Cooled Seats, Navigation, Power Adjustable Pedals, Front and rear Park Assist, Built in Inverter to charge your Laptop, Lane departure warning, Forward Collision 2019 Chevy Silverado 3500 LTZ Dually 4×4 Crew Cab for Sale.

Are there any problems with the GM Duramax?