The Duramax Diesel is 10 Years Old


Duramax – the diesel engine that saved GM’s heavy-duty pickups – is 10 years old, and the company celebrated the milestone last week.

In 2000, Isuzu and GM started joint production of the first 6.6-liter Duramax V-8 diesel engines for GM's 2001 Chevrolet Silverado and GMC Sierra HD pickups. GM teamed with Isuzu to tap Isuzu's diesel engineering strengths to help GM become a major player in HD pickups. GM's earlier 6.2-liter and 6.5-liter diesel engines were widely considered to be noncompetitive versus Ford's Navistar-sourced Power Stroke and Chrysler's Cummins-built diesel engines.

How good were the 300-horsepower, 520 pounds-feet of torque Duramax oil burners? By 2002, GM had 30 percent diesel pickup market share, up from about 5 percent in 1999. By May 2007, the 1,000,000th Duramax V-8 diesel engine was built at the Duramax engine plant in Moraine, Ohio.

Although the base engine architecture hasn’t changed, there have been four versions of Duramax since its debut: LB7, LLY/LBZ and LMM. The latest Duramax 6.6, dubbed LML, is rated at 397 hp and 765 pounds-feet of torque, and 60 percent of its parts are new.

But the decade of the Duramax hasn’t been without at least one miss. In June 2007, GM introduced an all-new small-displacement 4.5-liter Duramax V-8 diesel engine that was designed entirely in-house without Isuzu’s assistance. It was slated for use in GM's light-duty pickups before falling truck sales and rising fuel prices caused GM to indefinitely postpone its arrival in March 2009.

Still, GM has lots to celebrate with the Duramax.

“The bottom line is that the DMAX engine plant built more than 1.2 million engines in 10 years with a track record of quality that sets them apart from other manufacturers,” said Rick Spina, GM vehicle line executive for full-size trucks. “Many of our loyal Duramax owners have hundreds of thousands of miles on their engines today.”

And we hear GM is hard at work developing an all-new large-displacement Duramax diesel for its HD pickups that we hope will continue its legacy for a long time to come.


Good job Isuzu!

And now that Toyota is the majority owner of Fuji heavy (Isuzu) maybe Toyota will have a suprise diesel soon for the U.S. market...

Long live the Duramax!

I like how the only negative comment, is that they DIDN'T introduce a 4.5 liter version. Never mind the injectors in almost ALL of the 2001 and many of the following years, did not even last 100K, or the fact that the first version with the Garrett Variable Vein turbos, had a HORRIBLE overheating problems, that led MANY to need a head gasket replaced much sooner than expected.

I'm sure those issues couldn't possibly be considered one of the negative issues in the first 10 years.

How about the fact that they could have sold PLENTY more if they would have put this motor in the Suburban, or an HD Tahoe. Awesome how they just handed the diesel SUV market to Ford. People like this motor so much that they are performing the swaps them-selves.

a GM warranty is also worthless.

You get what you pay for.

If only the tin around it had been better.

The Duramax was and is hands down better than Ford EVER put into any of its trucks. Jealousy will get you nowhere Ford Fan Boys.

Want to be cheated? Buy GM!

GM Terrorizes a Disabled Veteran

I saw a 3500 dually in the dealership service dept that had over one million miles on it. It was getting an oil change and new injectors. This was the first time the injectors were replaced. Impressive


Your a loser.

Dont own diesel but worked as a helper for a dpw mechanic for a summer we had a pretty even split of all 3 in our trucks cummins lasted forever and pulled everything dmaxs seemed to be just as powerful but like someone else said had injector problems and w/e rear ends they had in them where crap (so I guess I cant hold that against the motor) the powerstrokes would have all sorts of problems motor related and not

Too bad Isuzu itself has never used this engine anywhere else. They have relied on their huge straight six diesles that range from 7.6 to 9.8 Litres for non-North American Medium trucks and their 15 Litre V10 510hp HDT Truck engine.

wy gm don't put the duramax in 1500,if you don't need a 2500.or 3500,,,or we get the 4,5 after market,,give use the choice....duramax is a good engine,,whit to ford ,the old diesel,,,was a big problem for the company,,,the virus engine...good for ford if the new diesel is better ,only the future no the story...the new duramax is coming this engine be gest..500hp..900 pf...

Long live the Duramax!
Down with the Power Joke!

We want the 4.5 we want the 4.5!!

DirtyMax,Power Choke....

Diesels mainly give their drivers all the sounds and smells to make them think they are tractor trailer big rig drivers.....
For most,a small displacement V8 or even potent V6 would be plenty.However,the diesels make the makers more money (especially on non warranty repairs),so why would they want to promote cheaper alternatives?
Remember,back in 1980 around 195 hp was top HP in a did anybody ever tow anything or drive anywhere?? A mystery....

@ paul: lol! I have wondered that myself. My old Chevy and F150's were considerable less powerful than the new trucks, but got about the same gas mileage and towed "almost" as good. Also, I want a V-6 infront of a 4x4 configuration with an ext cab in an F150, ford says no. Reason: have to purchase EB 3.5L or 5.0L V8 for some reason.....

Ha Ha GM Ford they both are good trucks with good engine.
@ RJ You get what you pay for.
Buy a Toyota with rusty frame

A GM post, and all I seem to be reading in the comments are Ford Fanboys bashing it. Jumped all over it. It's pathetic, come on guys.

The Duramax is a great engine, It has to be if its lasted 10 years and still dominates the competition. Although the spanking new Powerstroke has gotten close, it still lost. Can't wait to see what the new DMAX will do.

Happy Birthday Duramax. One heck of a great engine in front of the best automatic transmission in any pick-up.

Long live the Duramax!
The best diesel engine,hand down!

gm junk the truck that never changes yuck

10 year old junk. If you ever have a major problem good luck on getting GM to honor their warranty.

Duramax has seen lass problems for it's 10 year history then powerstroke in 2003. nuff said!

Just a few questions. I bought a 2003 Duramax CrewCab LT back in 2003 and I've had a few problems. First the pinion seal was leaking. After I got that fixed my rearend shelled out on me so Chevy replaced that. I,ve been kind of having electrical problems for about a year or so now and I'm wondering if anyone has any pointers. It started with my front seats not working and my seat heaters not working. I found a breaker/fuse under the steering wheel that if I pull it out and put it back in everything works for a while. Then it does it again. My cruise control, radio, powerseats and dash lights quit working for about a minute or so while I was driving one day. It hasn't happened since. My SERVICE BRAKE SYSTEM light comes on in the morning while I'm waiting for my glow plugs to warm up. It goes away once I start up. The other day my BATTERY NOT CHARGING light started coming on. My volt meter reads about 9 or 10 volts on my dash and once my truck starts up it takes about a minute or two and then it shows about 14 volts. I got my batteries checked the other day and the test showed both batteries bad. We decided to retest them and the test said they need to be recharged to retest. I drove my truck around all day yesterday and stopped by NAPA and they tested my batteries and alternator and everything checked good. This morning I went out to my truck to start it and everything worked fine. I don't know if I might have an electrical problem somewhere or what. Maybe I should go buy a code reader and see if I get anything. I don't have a warranty on it anymore. I'm thinking a warranty wouldn't be a bad investment right know but $2,000 isn't exactly pocket change to me. Has anyone been experiencing any electrical problems of this sort? Any help?

Is anyone else ready to bring a class action suit against GM for their handeliing of this problem? If anyone knows of an active suit, please let me know. If not and you want to be involved, send me your info.
I own a 2003 Chevrolet with a Duramax that I cannot buy new parts (injectors) for and it is under warrantty. I've had it with GM.

HI hoppflyer, YOU SHOULD READ THIS!!!!I'm sure you can understand the adversarial nature of my letter. I didn't want to start out on a bad note while trying to solve this problem, but I have been given the run-a-round for several months. Customer service has refused to let me speak to anyone who can do something about my problem. I ask for the zone manager and customer service tells me I need to speak with the dealer. I call the dealer and they say I have to get the zone manger info from customer service. The entire ordeal has been very frustrating. Make no mistake, I would much rather be Chevy's best friend than their enemy. We live in our RV full time and need a reliable truck to tow it with. Our truck is our lifeline to making a living.

In May 2001 I bought a new Silverado Duramax to tow my 5th wheel. I had heard and read that the truck was the best on the market. For the first year and eight months it ran great. I'm sure I sold plenty of Duramax's for you during that time. People would come up to me at my shows and ask me how I liked my truck. I would tell them it ran great, had plenty of towing power, and never overheated. I was your best spokesperson.

The first problem I really had was at 50,000 miles. There was a short in the solenoid and the starter had to be replaced for $800.00. At 58,000 miles we began having "service engine soon" light problems and would lose power on the highway. That and other problems were taken care of. We expect some minor repairs as we travel.

At 98,000 miles the truck started running rough with black smoke visible when towing up hill. I took it in to a dealer in California. They found out that the fuel injectors needed to be replaced. At that point they found diesel fuel in the engine oil. All eight injectors were replaced under warranty. The repairs cost us nothing but we were forced to park our RV and do our show tour by rental car. That also meant staying in motels and dining out every meal. That was what we bought the RV to avoid. The cost of motels, car rental, and meals for three weeks was several thousand dollars.

At 135,842 miles the "service engine soon/water in fuel" light began coming on again. They found a short to ground in the circuit between PCM and sensor and repaired it for $535.00. In March of this year, at about 144,000 miles, the U-joint went bad and had to be replaced for about $400.00. That repair is not surprising considering the driving and towing we do.

Later that month the "low coolant" light began to come on. Since we were having problems with the electrical system I assumed this was just another short. I checked and it was low. I replaced about a gallon of coolant as we drove from California to Michigan. I was also noticing that the truck was not starting as quickly as it once had. It was a delayed or hard start. At one point I noticed white smoke coming from the tailpipe. I took the truck to a dealer in the area and a few days later I was called with bad news.

The service man actually apologized before he told me that the coolant had leaked into the injectors and then into the engine and the heads may be cracked. He explained it would cost between $5,000.00 and $8,000.00 dollars to repair, depending on if the fuel injectors would have to be replaced (again). They ran some tests on the heads and found they were cracked and needed to be replaced. Once more we had to rent a car for 16 days and continue with our show tour staying in motels and eating in restaurants. The dealer paid for nine days of the rental car but the breakdown cost us several thousands dollars (again).

I did some homework and found a Chevy bulletin. In its headline it contained everything we had just experienced, the service engine soon light, low power, hard start, fuel in Crankcase, (suggested replace all injectors). Other trucks must have been having the same problem for a bulletin like that to be out there. I also went to several chat lines on the internet and found people were talking about injector and leaking sleeve problems. Including the return seal or valve giving out and letting fuel into the crankcase.

While the truck was still in the shop I called Chevy Customer Service. They called the dealer and got back to me with the information that there was no leak and the engine heads cracked because I was "towing something". I would imagine that after someone buys a $36,000.00 truck they would tow something with it. I had kept a close eye on the heat gauge at all times and it never ran hot. My trailer is well under the 15,000lb tow rating. Their last remark was most telling. They said, "Chevy trucks are our responsibility only up to 100,000 miles". I don't think Chevy would sell many trucks if they had that on a sticker in the window. I know I would have never bought one. I asked to speak to the supervisor and they said they were the supervisor. I asked to speak to someone who could help me and they said there was nothing that could be done.

When I went to pick up the truck the next Monday the first thing I did was speak to the mechanic who worked on it. He informed me that the fuel injectors "were" leaking, as well as the sleeves, and that could have caused the heads to crack. Someone was NOT telling the truth. The total cost to replace the cracked heads was $5,379.00. We could not afford to get the injectors replaced. They hoped the cracked head repairs had solved the start problem. We left Michigan and drove 200 miles to St. Mary's Ohio. Once there we realized that the hard start problem was still present. We took the truck to a near by dealer. They found that the number eight-fuel injector was bad. We had to rent a car for two days. The dealer then gave us a loaner and we continued our show tour for the next week while the truck was fixed, again spending money on motels and dining out. We picked up our truck and had a $1,355.00 repair bill after spending $5,500.00 just the week before. The entire cost to us for all the repairs and travel was over $12,000.00. We don't have this kind of disposable income. The repairs have emptied our bank account.

At this point I hope you can understand my disappointment in my Chevy truck. No one spends $36,000.00 on a heavy-duty diesel and expects it to start falling apart after less than 150,000 miles. You pay extra money for a diesel to last over 300,000 miles. I owned a Ford Aerostar van and put over 270,000 miles on that gas engine before I sold it. I know how to take care of my vehicles; they are my lifelines to my job. No one expects to have to put that kind of money into his truck after less than three years, regardless of the miles.

I hope we can settle this issue in a professional manner. I don't expect to have to pay thousands of dollars to repair a poorly designed engine. I expect Chevy to stand behind their products, just like I do in my business.

The best solution to this problem, for both parties, would be to return our present truck for a new improved reliable truck to feature in our future productions and to work with you, not against you. If that is not possible then a reimbursement for our $7,000.00 repair bill is in order and a guarantee to keep the truck running in case the fuel injectors fail again in the near future.

The worst case would be for Chevy not to stand behind their product. If that happens I will not be able to promote Chevy to your prospective customers at my shows or in my DVD's. In fact I would have to put a disclaimer in my shows and on my DVD's saying that by using Chevy in my videos I am not promoting Chevy. At that point I would also have to tell the truth about my experiences with your truck. I'm in contact with hundreds of thousands of RV and truck buyers each year, and I plan to be in that position for a long time. I can influence their decisions to buy Chevy or not. Again I hope we can resolve this in a professional manner. I can guarantee you that Chevy will have no better friend in me or no worse enemy.

Business fact: One negative customer is much more influential than three positive ones.
My business is as influential as thousands of customers.
Thank you for your time.
John Holod


The month of July ended with a very disappointing phone call from Chevy. We had paid out over $8,000.00 in repair bills in the last few months. We also paid over $4,000.00 in out-of-RV expenses like rental cars, motel rooms, meals out, etc.. In addition to that we are weeks behind schedule on our shoot. As they held our truck hostage waiting for parts shipped via Cuba the dealer in Key West kept assuring us we would get "trip interruption" payments to take care of our rental car and RV park fees. The Customer Service (oxymoron) rep mentioned the same thing and spoke of "goodwill" reimbursement for all of our problems.

Chevy was having so many repair problems with the fuel injectors on the model I bought they had just extended the warranty to 200,000 miles instead of the usual 100,000 miles, so at least our new repairs would be covered. After months of working with Chevy Customer Service (oxymoron), spending hours on the phone and sending in several very tall trees worth of paperwork they called and told us that out of the $12,000.00 plus that we had spent on repairing their very poorly designed engine they would reimburse us $1,200.00. That was the exact cost for us having ONE (out of eight) fuel injectors replaced in Ohio. We would receive no "trip interruption" payments or "goodwill" (oxymoron) money back. We would have to pay the $5,500.00 to replace the engine heads after they had sent out a bulletin to their repairmen describing exactly what had happened to us when the coolant leaked into the engine due to the bad injectors and fried the heads.

Chevy paid us the least they could possibly get away with. A $36,000.00 truck should last more than three years no matter how many miles are put on it. You buy a diesel engine because it supposed to last 300,000 to 400,000 miles, not 100,000 miles. A Chevy rep told me that they are not responsible for their vehicles after 100,000 miles. Maybe Chevy should put a sticker on the window in the showroom that says that. The rep also reminded me that I was "towing" something with their truck. No kidding! If I didn't have to tow an RV I could have bought a very nice car. Is Chevy making trucks that they don't want you to tow something with? Are all those TV commercials showing a Chevy truck towing a large skyscraper lying? Maybe they should also put that on a sticker on the window in the showroom. It would say,"Caution: Towing Something With Your Chevy 3/4 Ton Pickup Truck Can Be Hazardous to Your Trucks Engine!"

I had explained to them that I speak to over 100,000 potential Chevy buyers each year, but that didn't help. Many see the Chevy in the video and ask me how I like it, so now I'll just have to tell them the truth. Let's see, if I can talk only 50 truck buyers a year out of buying a Chevy, with each truck costing about $40,000.00 that would cost them .............. Well, you do the math, but it's a lot of money! I know it would cost them more than the $12,000.00 they owe us! The worst part is that the truck is our lifeline for making movies, getting to shows, etc... Each day as we drive down the highway we hear every little noise our truck makes and hope it is not another problem that will take the rest of our savings, destroy our business, and our lives. LIKE A ROCK CHEVROLET. Oh yeah, sure!

John Holod
2008 F250 SUPER-CAB 6.4 PSD 2WD 1999 F250 super-cab 7.3 PSD 2WD(sold)


I have a 2004 Silverado 2500HD D/M with 136,000 miles and it's ironic that I came across this blog after paying a Chevy dealer over $3,100 to replace 3 injectors and the intermediate steering shaft. I have the TSB that states the injectors are covered against failure for 7 years/200,000 miles "due to fuel injector body cracks, or ball seat erosion, or high pressure seal extrusion". I was informed by the dealer that they were clogged beyond repair but didn't fall under this qualification for warranty. I contacted Chevy customer care; Ron White (foreign accent - great for an American Company) called back and informed me that, 'Chevy considers this case closed and that no further action will be taken'.

I, like others, use my truck for business (motorcycle / atv delivery). With the daily escalating price of fuel I can not afford a sudden, unexpected service bill of $3,100 ESPECIALLY ONE THAT CHEVY HAS A WARRANTY BULLETIN OUT ON. In addition to this problem, Chevy has the following unaddressed problems:

1) Intermediate Steering Shaft. This wears out within 55k miles. I'm on my third one and had the joy of paying for the last one out of pocket. They have had complaints about this under-engineered part for over 5 years yet Chevy does nothing to fix it.

2) Front Wheel Hubs (4 wheel drive). These separate (don't you think this would be a safety concern). According to internet postings they were pulled from NAPA and Auto Zone shelves by the manufacturer - Federal Mogul. Guess who supplies them to Chevy? Federal Mogul. Mine went @ 63k miles and I was told by the dealer's service writer to, "avoid potholes".

I, like other bloggers, was a proud Chevy Silverado HD owner when I first bought this truck. I was their best spokesman. All of the customer surveys were filled out with glowing remarks. 4 1/2 years later I am their biggest naysayer. Isn't it ironic that they stop sending you customer surveys when the truck begins to fall apart??

Up to the moment I paid $3,100 for the injector repairs I was a "Buy American" type of guy. NO LONGER. I have received the worst possible service from more than one authorized Chevy dealership and have experienced first hand that Chevy Customer Service is a misnomer. I have baby'd my HD like it was my child. I don't want something for nothing; I'm responsible for the maintenance and inevitable repairs that go along with owning this machine. However, when there are known problems, Chevy needs to step up to the plate - THEY HAVEN'T (both on the corporate and dealership level).

I truly hope that Toyota comes out with a diesel Tundra with a towing capacity of 12k or more. All of the loses the big three have received in their market share are directly attributed to the problems they refuse to address (by their making) and the shoddy customer service. Let me know if there is a class action suit; I'm ready!

Read more here:

This is a real eye opener:

Duramax class action suit

New User | Posts: 1 | Joined: 06/10
Posted: 06/03/10
11:08 AM

I bought a 2002 3500 to use as a work truck...My nephew has an I figured if he couldn't tear it up it must be a tough truck...just the name DURAMAX sounds bulletproof....Bought the truck with 80,000 miles...8000 miles later put 6000.00 into the allison transmission months later fuel rail was replaced...I was getting close to the warranty expiring so had them check injectors ...they checked out fine..of course...warranty is gone...nephews truck still has warranty time ...he blew his oil seal out said he had been running on 7 cyl.and they will not fix because of 'poor maintenance'...he had taken to their shop 3 times to have injectors checked and always had oil changed at a station...bottom line engine is gone...will take 14,000 to fix....2 weeks later MY TRUCK does same thing THAT IS 2 CHEVYS DOWN IN OUR YARD ..MONEY IS TIGHT NEITHER ONE OF US CAN AFFORD TO BUY A NEW ENGINE OR THE LABOR INVOLVED I AM LOOKING TO BUY A 2,ooo.oo$ truck just to haul welder until I save enough to buy engine...If I had a stick of dynomite to put under it I'm afraid truck would screw it up...Sign me up ...

Sign us up. We own a 2002 3500. Love the truck but replacing injector #14 at 174K. Just too much money. We got the "Sorry about your Luck" letter from GM after the first set were replaced under warrant at 105K. Second time around they told us that the warranty only covers it once even though we were only at 140K... If only GM would have stepped up. I'm going to pick up my new Dodge tomorrow....

New User | Posts: 1 | Joined: 03/10
Posted: 03/01/10
04:33 PM

My blood pressure is about to give me a stroke. I've been going around and around with my dealer, Chuck Nash Chevrolet of San Marcos, Texas over bad injectors. They say it is within Chevrolet's limits so they wont replace the injectors. But they can't tell me why my truck smokes at idle. My 04 Duramax only has 17k miles on it, and the extended warranty runs out in October. I believe they stalling until they have a good legal reason to refuse to replace them at their expense. In the meantime I can get a ticket for defective exhaust/too much smoke.

I want to get in on a class action law suit too. But with the government bailing out Chev/GM , ultimately the government is who we would be going up against.

Roy Gay
Buda, Texas

Posted: 05/04/10
01:35 PM

Would be very interested we are stuck with a $5,100 repair bill for the injectors a 2002 duramax with 81,000 extended warranty on injectors 7 yr or 200K what ever comes first so we are out of luck.3 were bad- we opted to replace all as the others could go out any time and the labor was the same either way.
Very concerned with internal engine issues as fuel got into the engine and from what I read on all the other sites discussions can cause big expense issues down the road.
Only help they offered us was $1500 coupon to purchase another chevy in the next year. not likely as I want no part of owning a product the manf does not stand behind.
By the way the new injectors come with a 12 month 12,000 warranty which means this time next year we will be in a risky enviroment and could face more expensive repairs.
For sure add me to the want to sue list and I will provide addition information as needed.


I have a 2002 2500HD crewcab longbed diesel that is on it's 3rd set of injectors. The 7/200,000 warranty ran out so now I'm stuck with a $4000 bill! The truck only has 72,000 miles on it! I was pulling my rv and white smoke started pouring out the exhaust like the time before. I've put 7000 miles on it since last injectors which were put in it under warranty. Injectors are junk and I'm stuck with the bill. Let me know if you need help with the class action suit!


count me in on the class action, were do i sign up? 02 dmax with 115,00 and about 8 months out of warrinty. I was told too bad you got 100,00 out of it. customer assistance was a joke, after about two hours on the phone with them giving them all but my shoe size i was told someone would get back to me in 24-48 hours. after the 5th day i called back to find out they had the wrong info for me and they closed the case after they coud not get in touch with me. i gave them 3 phone numbers how many more do they need. so i asked customer sevice for a superviser, and was told the guy i was talking to was the superviser so i asked for his boss "sorry you have gone as far as you can go there is nothing more we can do". its no wonder gm is now government motors. i bought a diesel because they are supose to last a long time, 3-400,000 miles, boy was i wrong i could of replaced a gas engine for what i have into the diesel injectors ($5,295.00). so if anyone needs some names for a class action or has some info that might help me out (like the name and number of a gm exec) i would greatly apreciate it
thank you
from a former gm fan

I would be very interested in a class action lawsuit. I have had problems with my 2006 Duramax LLZ since 108,000 miles. (now at 140,000) Going into limp mode, code P0087 "low fuel rail pressure". Been in several dealerships at least 6 times for this with no fix. I had to get out of the ltl freight business due to this! Have only pulled a couple of loads since 8-08 and it happened both times. The problem has gradually worsened. Originally it only happened while towing uphill, and has progressed to the point where it happens when pulling an empty trailer now or a fairly good load on flat terrain. I think it is a grand cover up by GM to avoid the responsiblity of repairing all these Duramaxes! I have my doubts as to whether or not the fuel injector problem was ever fixed. It is my opinion it is either the injectors or something related.

One more...

HA! Just injectors? Get in line. All of the injectors on my 05 LLY have been replaced at least once. The truck has been in "limp mode" over twenty times for fuel system related problems. First it was a bad fuel/water separator, then the next three times it was injectors, then now it is the fuel control module, injector pump, and all related seals and backflow prevention. Not to mention that the injectors can not be flow tested at this time and they are still a suspect. This is all in less than 67,000 miles. Three weeks have passed since the truck went from 19.8 mpg to 6 mpg. Yep, SIX. GM has at this time told me to stuff it and keep putting my young daughters in a truck that often dies and goes into limp mode during normal driving. No help there. The math works out to a $180.00 a day cost to get to work. The parts needed are not expected at the dealer anytime soon. This lifelong Chevy guy is about to jump ship. Even my 6.5 has been more reliable than this. I would be VERY interested in learning more about this 200K warranty you mentioned... . Best of luck to you and me.
Lightly massaged Duramax passing Mustangs, imports and fuel stations.


Did not mean to come off rude on my reply. Sorry if I did. I am pretty unhappy with my $53,000 truck that I , for the umpteenth time, can not drive my family around in safely. I sincerely hope that you can get your issue resolved. Your truck is currently out of warranty, right? How much are these repairs costing you? I am petrified to own my truck after 100K at the rate of failure I am currently seeing. I wonder if I am able to follow the legal path as well. That is the only way to get noticed these days is to hit their wallets.
Lightly massaged Duramax passing Mustangs, imports and fuel stations.


I too have fallen vicitm to the duramax curse @ 156,000 kms (100,000 milles) I had injectors replaced .Now at 275,000 kms I am faced with the same problem again my injectors are leaking and GM will do nothing except more then gladly take my cash .The injectors are just the beginning I have also had to install 2 new transfer case housings as well as a crank position sensor and reluctor . like most of you I bought the truck hoping for long life and instead got a route to the grave as this truck is gonna be the death of me.

Duramax Injector Issues:

LOL Out of the 35 responses, 11 of 'em came from one guy. And all of 'em were posted right after the other. Diesel, you must have alot of time on your hands.

lol. Duramax is a joke.

The Duramax is a great engine but the injectors for several years were crap. My problem with GM/Chevy trucks has never been their engines (except for the knocking piston slap issues)... It's the rest of the truck. The bodies and interiors are junk. Complete cheap plastic, cheap sheetmetal rust buckets.

Their 4l60/65e transmissions were also garbage.

@RJ - That "florida biker" story, all talk... or there is something he's not telling us. I've had one truck replaced by GM because even THEY couldn't figure out what was causing it to literally be "dead". We got it home, drove like a champ, next morning, there was no life to it at all. They replaced the truck free of charge. 98k miles later, they replaced the transmission free of charge (extended warranty!). Our suburban that was one year younger than the silverado, tranny went out at 99,9xx miles, replaced free of charge. Current 07 Suburban, ALL work has been taken in without a fuss and done at their cost.

Good grief, I cant believe how immature some of these posts and responses are.. And thanks Diesel for the wall of text…

Congrats to GM well over 1 million and counting. I wonder how many of them are still on the road.

If the Duramax is so great why does it sell so poorly compared to the Powerstroke? Ford has sold more Powerstroke trucks this year alone then Duramaxs this year and last year combined.

Congrats Duramax, How many different engines has Ford had over the last 10 Years? I forgot, lost count a while ago....But you Ford boys keep talking... I laugh at all these people that say "I love the Duramax, but the truck around it sucks" Uh, have you people seen the 2011 HD's ? The Frame is just as good or better then Fords, The brakes are better and the ride and handling are far superior... Also not to mention the Allison is the best automatic tranny on the truck market hands down... The only thing in the Ford that is better is the interior....And in a truck, that really isn't saying much.

10 years of greatness, keep it up GM

can't wait to see the 6.9 U-Max ;)

"Caution: Towing Something With Your Chevy 3/4 Ton Pickup Truck Can Be Hazardous to Your Trucks Engine!"


I see it every day. Guy's buyin' diesels that have absolutely no reason do. Then, after miles and miles of poor maintenance, short trip driving, poor quality contaminated fuel, and cheap aftermarket parts, they have problems, and expect the manufacturer (Ford, Chevy, and Dodge too) to cover the bill. Guys, guess what? An $5000+ repair bill on a 8 year old diesel with over 100,000 miles on it is NOT uncommon, even in commercial trucks. Fact is, there's a lot MORE that can go wrong with a diesel than a gas engine, and the the parts are substantially MORE expensive! And since you paid MORE for the truck to begin with, at the end you will find LESS in your wallet! Do the math!

Good Point Big Bob!

In any event, the Duramax, even the early versons, didn't have the injector problems the 6.0L Powerstroke did. The neat trick the Powerstrokes did was when the injectors started leaking, they would dump so much fuel into the oil the turbo bearings would fail. Idiot mechanics would replace the turbo without checking the oil for fuel contamination, the the new turbo would blow as well. Ha ha, jokes on you! I have seen many fuel tanks in these suspect diesel pickups so full of rust and garbage from low quality fuel because the cheap a$$ed owner wanted to save a few bucks and buy fuel from some questionable station out in the sticks, or worse yet get some old water logged 'red' fuel off some farmer. Take a look at a tractor or semi truck fuel filter(s), and then look at what is on a Powerstroke or Duramax. And you better believe that Ford or GM wouldn't dare put 'real' fuel filters on pickups, because these same guys crying about how much their diesels cost to fix would surely scream at having to shell out $150+ for fuel filters!

GM is just putting the D-Max into regular cabs?! Dang! I thought they did that all along. The 6.5L Detroit or whatever it was called was offered in all cabs, even half-tons! On that note, GM should resurrect the half-ton diesel. I totally digged videos of a 6.5 K1500 on YouTube. It was in an earlier story on about the 2011 GMC Sierra regular cab 2500.

"If the Duramax is so great why does it sell so poorly compared to the Powerstroke? Ford has sold more Powerstroke trucks this year alone then Duramaxs this year and last year combined." --Mike 8/24/2010 10:35AM

Like I said, up until now GM never sold a regular cab D-Max, at least that's my reason. I've seen more extended and crew cabs than regular cabs.

Duramaxs suck, any gm diesel does. but the tundra sucks more.

are you kidding? the allison the best tranny ever put in a truck. wake up! its fine for a stock truck. put some power to it and pull a good load and that allison will spit its guts out.

You know what they say, when you're not the big dog, your trying to take out the big dog!!

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