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 should I do if my Duramax engine wont start?

With the engine OFF, loosen fuel filter assembly plastic bleed screw a turn or so, and depress the round priming pump on top of FF assembly until fuel squires out of vent. CAREFULLY close plastic vent nut with fingers or nutdriver. Depress pump until firm. Barely finger tight with nutdriver is all you need.

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.

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.

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.

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.

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.

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 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 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.

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.

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 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.

When did the LLY Duramax engine come out?

The LLY Duramax engine found on 2004-2006 Chevrolet/GMC HD trucks is the second generation of the Duramax line. It can last hundreds of thousands of miles, but it still has its fair share of issues. Thankfully, the LB7 injector problems were resolved, but some new problems revealed themselves.

Are there any problems with the 6.6L LLY Duramax?

Thankfully, the LB7 injector problems were resolved, but some new problems revealed themselves. Some of these 6.6L LLY Duramax engine problems stem from the fact that it has significantly more horsepower and torque compared to the original Dmax.

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.

What are the problems with a Duramax diesel engine?

Both of these issues result in fuel leaking from the injector which can then enter the crankcase. This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil. You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring.

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 is the first year of the Duramax?

The LB7 Duramax was first introduced for the 2001 model year as General Motors retired its 6.5L Detroit diesel. In every possible way, the Duramax was superior to the outdated Detroit and marked a revolutionary turning point for GMC and Chevrolet pickups in the diesel marketplace.

Where can I buy a 2004 Chevy Silverado?

OC AUTOS The Diesel Boss! THE FIRST and only INDEPENDENT DEALER TO LAB TEST ALL OF THEIR VEHICLES! Visit Our Website: www.ocautos.net Reach Us At: (714) 265-2600 2004 Chevrolet SILVERADO 2500HD 6.6L DURAMAX DIESEL 4X4 CREW CAB SB

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 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.

Is there a problem with my Duramax truck?

If it’s a 4×4 all of the classic Duramax trucks from 01-07.5 have the issue. And if you have any other trucks all Chevy and GMC trucks 1500, tahoe, etc. from 98-07 have the same issue. Anyways below is a link to the fix, and on the bottom left side of our site is 13 pages of instructions that shows the problem and how to fix it.

When did I Buy my 2006 Duramax Diesel?

It was a lease return when I bought it in June 2007 with high mileage for its age, but did not appear to have been abused. Are there any known serious problems with the 2006 Duramax, or things that I should watch for?

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.

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 was the lawsuit against GM over Duramax?

The judge was told Duramax diesel truck owners paid an extra $9,000 for the Chevrolet Silverado and GMC Sierra trucks compared to gasoline-powered verions. General Motors told the judge the lawsuit should be dismissed all all 54 counts, including the allegation GM and Bosch violated the Racketeer Influenced and Corrupt Organizations (RICO) Act.

Are there any problems with the Def Duramax sensors?

There are known problems about the Nox sensors on these trucks (GM issued a TSB and extended the warranty to 10 years on these sensors), but not all of the dealers are familiar with the systems, and it took GM awhile to acknowledge the problem. That part does suck, especially for people who depend on their trucks either for work or play.

Is there a problem with my 2016 GMC Duramax?

(THATS FROM THE LETTER FROM GM) MY TRUCK HADE THIS EXACT PROBLEM AT 24000 MILES,SO I STRAIGHT PIPED IT. So now I can get a new whole exhaust and DEF system for my truck would display these exact codes. So anyone with a 2016 GMC Duramax you can call 1800-462-8782 customer assistance Center. They also are REIMBURSEMNET REQUEST FORMS I GOT ALSO!!!

What’s the lawsuit against the GMC Duramax engine?

Plaintiffs claim the trucks’ fuel pumps can’t handle the thin diesel, resulting in metal shavings finding their way into the engine.

What kind of engine does a Duramax truck have?

2011–2012 Chevrolet 2500HD Sierra 6.6L V8 Duramax diesel trucks with LGH engines 2011–2012 Chevrolet 3500HD Sierra 6.6L V8 Duramax diesel trucks with LGH engines. Currently, eight plaintiffs are being represented for purported case-in-point engine failures although the suit claims many more could face them as well.

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 are the head gaskets on a Duramax?

The Duramax diesel engines came with three different grade thickness head gaskets. They are labeled A, B, or C. It is tough for most people to tell what gaskets they have before tearing the engine down. Some engines have a B on one side and an A on the other.

What kind of head gasket does Duramax LLY have?

The truck in question was a ‘04.5 LLY, which thanks to heavy towing and a hefty tune, was in need of a new head gasket. The truck had started using coolant, a little at first, and then almost a quart a week.

When did the Duramax diesel engine come out?

When GM introduced the Duramax diesel in 2001, it was truly a state of the art engine. Since its introduction, the Duramax has gone through LBZ, LLY, LBZ, LMM, and LML designations, with a number of revisions along the way.

How do you remove cylinder heads on a Duramax Diesel?

Virtually all of the engine accessories have to be removed in order for the cylinder heads to come off. This includes the alternator, a/c compressor (which can just be moved to the side) as well as the idler bracket and pulleys (shown). To save time, Carrier removes systems in one piece whenever possible.

How long does it take to fix a Duramax head gasket?

The truck had started using coolant, a little at first, and then almost a quart a week. It was clear something needed to be done ASAP before anything else got hurt, so the truck was immediately put under the knife. One thing to remember about a head gasket job on a Duramax is that it’s very labor intensive.

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.

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.

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.

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

What kind of truck has a 6.6 Duramax?

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 2017 Duramax will not idle and I kill it and restart it might run normal or I might have to keep killing and restarting till it runs. Once it starts running it … read more

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.

Are there problems with the GMC Duramax F250?

The F250 was plagued by electrical gremlins like a self deploying tailgate when you backed up a trailer or a SYNC system that spontaneously did whatever the hell it wanted. I should have never traded the RAM but needed a write off for a business.

How is a Duramax engine remanufactured in the USA?

Assembled in the USA. Blocks and crankshafts are 100% magnaflux tested to avoid cracked components. Aluminum cylinder heads are dyed to check for cracks.Crankshafts are checked for size and micro-polishedto OEM specifications. If necessary, it is re-ground re-nitrated and micro-polished to OEM specifications.

What are the advantages of a Duramax diesel engine?

Very Efficient – The Duramax diesel engine generates a lot of energy which can move the vehicle smoothly and easily. Even if you have a big heavy truck to move, this diesel engine will maintain great performance efficiency the entire time. Furthermore, this allows the engine to be fuel efficient in the process.

Is it expensive to replace a Duramax diesel engine?

Any vehicle for sale which has a Duramax diesel engine in it is bound to be expensive. And if you ever need to get the engine replaced, you mine as well purchase a new vehicle instead. Expensive Repair Costs – The Duramax diesel engine is certainly not like a regular diesel engine.

Can a Duramax Diesel be used in a trailer?

Good for Trailering – If you are going to be hauling items in a trailer, the Duramax diesel engine is powerful enough to move them. In fact, a Duramax Diesel 2.8L I-4 can move as much as 7,700 lbs. when used in a pickup truck.

Is there a warranty on a 2002 Duramax Diesel?

Unfortunately, that’s exactly what’s been happening. GM recently sent out notices to owners of 2001-2002 Duramax diesels that they *may* experience injector failure caused by high fuel return rates or cracked injector bodies, and that accordingly, GM will extend the warranty on *covered* failures (not all) to 7 yrs/200,000 miles.

Which is the best engine for a Duramax truck?

There are a ton of bolt-ons that make driving a Duramax-powered ¾-ton Chevy or GMC much more fun than operating a 7,500-pound pickup should be. Already the quickest trucks out of the box among the Big Three, it doesn’t take much to keep them at the front of the pack.

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 mpg does a Chevy Duramax get?

I just bought a new 2004 Duramax Chevy, extended cab with short box. I filled the tank at 226 miles and showed 17.2 mpg. I filled again at 500 miles and now show 15.2 mpg. This is kinda discouraging. Is this normal? I bought the D/MAX expecting 18-20 mpg.

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.

When did the Duramax V-8 diesel engine come out?

Introduced in 2001 as a joint venture between GM and Isuzu, the Duramax V-8 was the General’s bid to one-up Ford and Chrysler’s newest generation of powerful and efficient diesels. This move was not voluntary on GM’s part, as competitor Chrysler had just purchased their previous engine supplier, Detroit Diesel.

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 are the most common 6.6L LB7 Duramax problems?

What Are The Most Common 6.6L LB7 Duramax Problems? The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. These diesel engines are where the Duramax started, and they have been so successful that the Duramax are still used in GM HD trucks today.

What causes a Duramax engine to hard start?

1 Fuel pump loses prime making the engine hard start 2 Low fuel rail engine codes 3 Engine misfires, shaky idling, performance issues

How much weight can a Duramax diesel truck move?

In fact, a Duramax Diesel 2.8L I-4 can move as much as 7,700 lbs. when used in a pickup truck. You can thank this engine’s superior torque for being able to produce this kind of hauling power.

Which is better a Duramax or gasoline engine?

Long Lifespan – Diesel engines are designed to have a longer lifespan than gasoline engines. As for Duramax diesel engines, they should last at least a few years longer than your average diesel engine. Of course, you still have to keep up the maintenance of your engine.

What are the disadvantages of a Duramax diesel engine?

Below are the top 3 disadvantages of a Duramax diesel engine. Expensive Engine – General Motors may have designed a powerful V8 diesel engine, but that engine is going to come with a big price tag. Any vehicle for sale which has a Duramax diesel engine in it is bound to be expensive.

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.

In fact, a Duramax Diesel 2.8L I-4 can move as much as 7,700 lbs. when used in a pickup truck. You can thank this engine’s superior torque for being able to produce this kind of hauling power.

What was the first year of the Duramax?

The first Duramax, which was offered in the 2001 to 2004 GMC Sierra HD and Chevrolet Silverado HD was the LB7. This 6.6-liter V8 started with a cast-iron block with aluminum heads that featured four-valves per cylinder.

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.

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