I just brought my 03 in to get injectors replaced for the fifth time, 77,000 miles. The service advisor told me that GM has came out with a brand new injector that they are putting in all the 01-04 (LBY) motors. The problem should never arise again. Is he blowing smoke?


I guess these are the ones that had put all injector replacement owners on backorder?

You mean LB7?

I just brought my 03 in to get injectors replaced for the fifth time, 77,000 miles.






If you have had all 8 injectors replaced 5 times, there has to be something else going on. Are you using vodka as a fuel additive? http://www.dieselplace.com/forum/smileys/HiHi.gif


Either they are only replacing 1 at a time or there is more than meets the eye.


No way possible for 8 good injectors to go bad 5 times in 77000 miles. More than meets the eye here.

I'd change stations where the fuel is purchased.http://www.dieselplace.com/forum/smileys/Geek.gif

If youre taking the truck to Carraige (GMC), Ide keep a close eye on them. Never been impressed with that dealer from day 1.

From what I have read here and abroad, Bosh has tried about 3 maybe 4 different style injectors. They are sure to get it right one of these days.


I do not worry about my truck breaking down, but it is starting to look like this injector problem maybe 40-50% of all Duramax engines within the first 100,000 miles. There does seam to be a big problem here. I know not all of it is fuel or fuel filtration. It is weird that some go 100,000 miles without a single problem, while others don't last 10,000 miles.


I wonder if much of it is over or under torque when the injectors are installed!

I dont think most people beat the truck hard enough. Tomac has 80k on his, stock injectors, no secondary fuel and no additive... Balance rates are always as close to perfect as you could want....

I dont think most people beat the truck hard enough. Tomac has 80k on his, stock injectors, no secondary fuel and no additive... Balance rates are always as close to perfect as you could want....


It is good to see another truck that stays away from the snake oil, and it like mine is still running good.

I don't use additives and my truck sees a full throttle romp daily. My balance rates were pretty badass too. I refuse to use additives. I would rather they fail in warranty than have ana dditive carry it beyond.

My 01 2500HD Duramax has been in the shop three times for bad injectors. The first time it was in the shop the taech replaced both fuel rails and all 8 Injectors. Then the second time the tech replaced all 8 injectors again and now The truck is at the shop and the tech replaced the Injector punp and now says that all 8 Injectors are now bad and will have to be replaced. Heres the kicker my truck has only 52,000 miles on it. I keep all my filters clean and I have all my Fuel tickets and I always get fuel at the same place because they sell so much there and if I go out of town I always get fuel at a major truck stop. Now Gm is sending a rep to the dealer to see if he can find out whats going on with this truck and why it has so many sets of injectors installed. I called Gm and they asked me what GM should do about my problema and I told them to buy my truck back or give me a new one. So GM is gonna send me the paper work and I hope they buy this truck back because its one one the first Duramaxs out in 01. I love the truck when it's running but now My 3yr/36,000 bumper to bumper is up and GM won't rent me a truck to drive while my truck is at the shop. The injector did not even last 1yr from when they were installed and they have less than 18,000 mile on them and now the dealer is telling me that he dosent know when they will get the injectors in the shop and they have 6 trucks down waiting for injectors now. I keep reading about all these 01-02 Duramax having problems and I know GM is tryiong to fix the problem but It's crazy to have a truck siting at a shop waiting on parts for an avrage of 6-7 weeks. http://www.dieselplace.com/forum/smileys/Unhappy.gif

Spinmaster


We put our 03 in shop yesterday (4th) for injectors and suppose to get it back tomorrow (6th). What I dont understand is why are you having to wait so long for injectors.


Genohttp://www.dieselplace.com/forum/smileys/Hug.gif

The dealer told me there is a nation wide back order and he does not know when they can get them. I don't know if this is BS but Im trying to get GM to buy this truck back with all the problems with the Ohms on the injectors you would think there mite be a problem with the electrical system and this is why the injector are craping out so much on my truck. My wife is an EE and Im a A&P mechanic and I would love to know more about the injector issues but so far I cant find any reason why the injectors are failing so much. I did find a Gm dealer how had one injector and he said he mite be able to find more but whos if he can but he is gonna try and track down some for me. The dealer also told me some Eng person from GM is gonna come and look at the truck and try and figure out whats going on but this could be BS too.

I dont think most people beat the truck hard enough. Tomac has 80k on his, stock injectors, no secondary fuel and no additive... Balance rates are always as close to perfect as you could want....


It is good to see another truck that stays away from the snake oil, and it like mine is still running good.





Maybe that is why he is SO fast, the dirty fuel eroded his injector out to 50% oversize http://www.dieselplace.com/forum/smileys/HiHi.gif

All to often we treat the symptoms and not the cause when there is a problem. I am beginning to wonder if the injector problem is actually a pump or fuel pressure regulation problem. How many of you have had the pump replaced after going through several sets of injectors?


Injectors are splitting? Sounds like a pressure spike to me... I wonder what the instantaneous pressure is just after the injector valve closes? Would need to be calculated I would think? Just figured I would throw it out there to see what you all thought.

Does anyone know what actually is the failure mechanism with the injectors (what actually breaks on the injector)? I think it is weird that some people have problems and some do not. It sounds like it has to be something else causing the injector to go bad such as the previously mentioned pump. Seems to me the cause would have to be something common to all the injectors in the engine they failed.

The dealer replaced the injector pump and the truck will start now but then stalls and won't start again. I think the tech is just replacing the what he think is wrong with the truck. I talked to a guy that works for a Bosch dist and he said he hasnt heard anyting bad about the injectors and they should last for 150,000 miles or better. He was suprised when I told him I have had been threw three sets of injectors and the truck only has 52k on the clock. He thinks the tech is just patching the problem and not looking for the cause of the problem. He also told me that they would like to test the injectors for free if I could bring them to the shop and see if it's really the injectors or maybe they could figure out why the problem is coming back. Im gonna talk to the dealer and see if I can get the injectors and take them to the shop and have them check because there a Bosch Dist and a certified Bosh overhaul shop too.

I went through the buyback process with Ford on my 03' 6.0PSD and was successful. I can tell you with certainty that they will Not be buying back an 01' with 52K on it.


You should push for some other compensation such as a platinum extended warranty with rental, etc.


EDIT: Actually, go for a buyback and let them offer what they will and then negotiate for the best you can get.


~Also, a guy I work with just picked up his LLY about a week ago and its in the shop right now, at 300 miles, with bad injectors http://www.dieselplace.com/forum/smileys/Disapprove.gif

I could be wrong, but I tend to believe the injector problem isn't as bad as it appears. And if we take care of our injectors by adding secondary filtering and additives, the problem is lessened. And even on the brighter side, it won't be long and many will be standing in line for aftermarket power modifying injectors.

I went through the buyback process with Ford on my 03' 6.0PSD and was successful. I can tell you with certainty that they will Not be buying back an 01' with 52K on it.


You should push for some other compensation such as a platinum extended warranty with rental, etc.


EDIT: Actually, go for a buyback and let them offer what they will and then negotiate for the best you can get.


~Also, a guy I work with just picked up his LLY about a week ago and its in the shop right now, at 300 miles, with bad injectors http://www.dieselplace.com/forum/smileys/Disapprove.gif
The bad thing aboutthis truck is I have had problems from 12K and GM know this and I have tryed to get GM to buy it back when the trouble first started. And even with 24k on the truck and the second set if injectors were replaced they still would not send me the paper work to buy the truck back, So I guess Ill have my Lawyer take over from here on out. It's not about the money it's the whole idea fo buying something from GM and they brag about how great tyhe truck is when infact there just putting a band aid on the problem from the start. I know that some 01-02 Duramax owners havent had any problems but why do so many have problem that keep coming back and yes I keep my filters clean and change them every 8k miles and if the fuel filters are so bad then why did use them in the first place?. There is no need to buy a second filter it's the injectors that are craping out not the filters doing a poor job.