My buddy just took his 04 LLY w/ about 1500 miles on it into the shop for a very weird condition. It is not setting a code but under light acceleration is make a loud knocking noise and sort of cuts out and blows white smoke and then some dark smoke. They have done tests on the crankshaft position sensor and tested for injectors sticking open while cranking. Does anyone have any ideas what could be wrong?

Mine had white smoke at about 1500 miles for a little while. When I asked the dealer about it they thought I had gotten some bad fuel.


That was the only time I used a different station I filled my truck and an endloader, the loder ran fine. and after that tank I havn't noticed it again from my truck.

we had the same thing it wouldnt idle and smoked white on a trip in june got fuel taken out and changed filter worked fine after that we where pulling uoer 5 fver

New to this forum but have had the same problem with my '04 GMC 2500. I took it to the GMC dealer and they originally replaced two injectors took it for a test drive and found more bad and then replaced the other 6. They kept it in the shop for over 3 weeks, something about not being able to get the injectors in from the warehouse.

Since I've gotten it back I have not noticed it again but it seems louder now than before and I don't know why that would be. Hopefully I/we wont have the problem again.

Aggie_90

Check out my post about engine issues with 1200 miles on engine that is aback a week or so ago. My symptoms were very similar to what you are experiencing, however I did get the engine check light. There is a selenoid that helps control the turbo. These turbos have variable vanes in them. With the selenoid stuck, our truck was starving for air, creating an overly rich condition, couldn't accelerate, blew smoke etc





dave

New to this forum but have had the same problem with my '04 GMC 2500. I took it to the GMC dealer and they originally replaced two injectors took it for a test drive and found more bad and then replaced the other 6. They kept it in the shop for over 3 weeks, something about not being able to get the injectors in from the warehouse.

Since I've gotten it back I have not noticed it again but it seems louder now than before and I don't know why that would be. Hopefully I/we wont have the problem again.

Aggie_90


What was final outcome? Did the dealer cover all this under warranty?

My buddy just took his 04 LLY w/ about 1500 miles on it into the shop for a very weird condition. It is not setting a code but under light acceleration is make a loud knocking noise and sort of cuts out and blows white smoke and then some dark smoke. They have done tests on the crankshaft position sensor and tested for injectors sticking open while cranking. Does anyone have any ideas what could be wrong?

Hello. What was the final outcome of this?
Did dealer replace all injectors under warranty?

Well, I have now sent my truck to the shop 4 different times which is where it is now. Still not fixed with the smoking and sputtering problem.

I sent in my registered letter today to start the lemon law process. I going to try to get them to buy it back.

I'll keep you posted.

Aggie_90

Well, I have now sent my truck to the shop 4 different times which is where it is now. Still not fixed with the smoking and sputtering problem.

I sent in my registered letter today to start the lemon law process. I going to try to get them to buy it back.

I'll keep you posted.

Aggie_90

Please do. This is nonsense.

The dealer called me on my problem [first time] and said it DID throw codes which indicated a bad injector[s].

So nowwwwww, I wait till they arrive via who knows where from.......?

I also will update peeps here on my smoking/bucking/knocking $44k MSRP Duramax.

Oh, and on a sidenote, the Enterprise rental guy snickered to a couple about a Vette guy wanting a Vette as a replacement on his warranty car repair. He said 'come on, no you cannot..........etc........' 'You can't expect to get an => rental.....'

I said, 'um, yes, you can -- Mercedes, BMW, Audi, Lexus, Acura, just to name a few will give you an => rental.'

He was speechless.......

[/QUOTE]

Please do. This is nonsense.

The dealer called me on my problem [first time] and said it DID throw codes which indicated a bad injector[s].

So nowwwwww, I wait till they arrive via who knows where from.......?

I also will update peeps here on my smoking/bucking/knocking $44k MSRP Duramax.

Oh, and on a sidenote, the Enterprise rental guy snickered to a couple about a Vette guy wanting a Vette as a replacement on his warranty car repair. He said 'come on, no you cannot..........etc........' 'You can't expect to get an => rental.....'

I said, 'um, yes, you can -- Mercedes, BMW, Audi, Lexus, Acura, just to name a few will give you an => rental.'

He was speechless.......[/QUOTE]

As far as Enterprise Rent-a-car goes. When I was forced to use them with the first dealership they gave me a Chevy Trailblazer. I told them that this was not an equivalent vehicle as I could not put lumber in the back of an SUV. They said it was listed as equivalent accordign to GM. They also told me I could not Tow anything behind the vehicle because it was against their insurance and wasn't allowed.

It was the last time I went to that dealership.

Good luck on your truck.

Aggie_90

Do any of you have the juice on it when you have these symptoms? Or did you have it on and then took it off and it still has the same problem?

My goodness. Same problems here. I took off the juice today and I'm gonna bring it to the dealership monday to see what , if anything, they say. 44K 12600 miles, and like clockwork, everyday, same intersection.....Knock, smoke, buck a bit.....


2004.5 LLY 4X4 285's, Edge juice, K&N, Magnaflow 4" loaded with westin parts.

Is there anyone who WAS NOT running the juice when these warmup knock/chug symptoms appeared? I have the same thing, usually as the truck warms up around the 150 area, when it's hot it disappears.

[QUOTE=masterp2] Is there anyone who WAS NOT running the juice <snip>

Yeah, me.

Bone stock.

Got it back today from the dealer.
Like I say, they said it threw a code indicating bad injector -- #7 to be exact.

Runs great now, as it should with now 1750 mi.....Edited by: av8rbri

Aaron at Edge prodcuts RE-ASSURED me that its NOT from "their" product...Its not exactly as esay as plug it in and de-tune it like a programmer. I dont know what to think.....12,600 miles and now seeing problems....I thought it was just me...Thank god....Its stock now so we'll see what happens.


Nick

Masterp2...I have the same exact problem. Juice at the 150-160 temp range. When it warms up it goes away....192 seems to be the magic number. Level 5....seems not to do it...most pronounced on level 3 low boost setting 5. I did receive a replacement juice this week after talking to edge. Preliminary reports are that the condition is better but not completely gone. Truck runs fine with the juice off. So it seems to be a juice only condition on my truck. The new juice seems to run better....even though it is the same version number as the previous? I did have my truck looked over...injector balance was fine and the ecm was up to date according to the dealer. I am gonna keep my edge and see what happens. However...I am gonna try a van akken box as soon as I get some more funds. I am kinda low right now cause I bought a sun coast level 3. Lets keep this thread going....I am taking a trip tommorrow and I will keep everyone updated. My guess is edge will make this right in the end.

Dpower:


Edge gave you a replacement chip? Was it easy? I generally cruise around in level 1 untill someone pisses me off, LIKE A CIVIC riding my bumper...Let them choke on some smoke and wonder what the hell I'm running in that 7000 lb truck...i like keeping people on their toes....Level 5, I'm kinda afraid to. I hit it like 3 times and I heard some loud knocking sounds at highway speeds and never did it again. Low boost setting for most responsive. You can really feel the difference at highway speeds....I have actually thought about getting a diablo sport tuner. At least then I can adjust my speedo and read engine codes....For almost 800 bucks, you'd think Edge would have done that as well.

It was easy...just call them and explain the problem. Edge runs all return modules to see if they can reproduce the problem on their lly's. The more feedback they get the better. I am gonna get another performance module in the near future...I will compare the results to the edge. I am also gonna get standard gauges soon....they are a good idea in my opinion no matter what you are running performance wise. As soon as tts comes out with a bigger program i WILL OWN IT! They seem to have quit the reputatation around here.

Sounds like a pain in the @%$...If the dealership dosent find anything then I will re-enstall it for my road trip this weekend.

av8rbri


I am not sure you have the same problem as described on this thread. I have notice that there arae 2 problems that are closely related, and noticed you posted yours on the other thread as well, a condition that some are remedying with fuel additives.


This thread addresses a fairly innocuous, yet distinctively loud, knock with light acceleration, as dpower describes, it can be manipulated with juice, as I have done also, level 3 seems to be the worst, and only during a specific temp range on warmup. You can push right through it, even on level 3.


So all I am saying is that we may be mixing different problems here, at least I think so. So if anyone is having widespread smoke and knocking, see if you fit better here. Maybe that will help clear up some confusion.


http://www.dieselplace.com/forum/forum_posts.asp?TID=15274&PN=0&TPN=1Edited by: masterp2

av8rbri


I am not sure you have the same problem as described on this thread. I have notice that there arae 2 problems that are closely related, and noticed you posted yours on the other thread as well, a condition that some are remedying with fuel additives.


This thread addresses a fairly innocuous, yet distinctively loud, knock with light acceleration, as dpower describes, it can be manipulated with juice, as I have done also, level 3 seems to be the worst, and only during a specific temp range on warmup. You can push right through it, even on level 3.


So all I am saying is that we may be mixing different problems here, at least I think so. So if anyone is having widespread smoke and knocking, see if you fit better here. Maybe that will help clear up some confusion.


http://www.dieselplace.com/forum/forum_posts.asp?TID=15274&PN=0&TPN=1








Negative masterp2, but mine did do the same things on light accel.


It is stock. Got it back last night. It ran fantastic for the first 70 or so mi.


However, just started the same sh*t this mrng. on theway to work. Real intermittent though. Bucking, coughing, billowing wht. & black smoke.


Now I'm pi**ed.............


Am now taking a look at the lemon laws in my state.


And yes, I am running Stanadyne performance.


Should not matter how much or how little the damn truck cost. This is a potential safety issue as well as a potential engine killer.


Later.Edited by: av8rbri

See, that is definately an unnacceptable problem. It is being discussed on the other thread. What you are describing is not what some of us are having. In fact, it could be argued that the knocking experienced (by some of us) at a specific temp range may be normal noise of the varying injection schedule. It also seems to be exasperated by the juice, JMO from watching these threads carefully. My truck does it, but it is not a severe problem like you have, and it's gone after warmup..


I'm not trying to push you out of this thread, and maybe my problem doesn't belong here, based on the thread starters original complaint. EG, I don't have a smoke issue, so I may be describing a juice related problem. Yours is not juice related, I understand. I wish you luck.


You should get an attorney, that will save you a lot of time (just the letterhead alone) in getting a new vehicle. What state? Edited by: masterp2

Well, gentlemen, running stock now with the Edge system sitting on my couch collecting cat hair. My unual trip to work was interrupted today by the sound of a smooth running, smooth shifting, quiet purring LLY Duramax. Took out the edge last night, let it cool off all night and today it was a whole new vehicle. I guess I need to send it back to Edge to have it re-tuned or something....I do feel a bit better now that I found the problem. Maybe I'll stand up my date with the dealer monday.

Nico...I would definitely stand up your date....don't think they can do anything for you....we will get it all figured out through edge eventually.

Dpower:


I have no need to go to the dealership now. I just got off the phone with Edge and they're very helpful. They suggest that I send it back and either they replace it with a new one or test mine on their trucks. Whater. I just want it right. All I needed was to drive like I did today, stock to see the difference. Whatever. I guess I'm good now.


Nick

Has edge done a software upgrade already? If not, what will change? I'm willing to bet they all create this annoyance.


But regardless keep knocking the door, they will fix it, no doubt about that.

Will we be notified of a software update or is it on us to do the research? Afterall, dont out home computers tell us when its time to update?

What state?

TX.....

computor update is available it decreases pump pressure at idle