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Old 05-19-2006, 01:06 PM   #1 (permalink)
scuba steve
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injector failure effects

My 2002 at 82000 is in the shop right now. Injector(s) were failing and blowing fuel into my crank case and in turn blowing fuel and oil out the pass by tube. truck did nnot show any signs of over heating but I cant help but wonder what kind of damage has been done running 300 miles with diesel instead of 15/40. bought truck used at 70000 miles w/ no extended warranty.Dealer says he need to call someone to find out what extent of 100,000 warranty will be covered. What's that saposed to mean? And last but not least, Is this what I have to look forward too with my chevy? replacing injectors at 700.00-1000.00 a pop?Looking for some hope here. steve
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Old 05-19-2006, 02:08 PM   #2 (permalink)
h45wt
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Injectors for 01-02 are 7yrs 200,000 miles with no $100 deductible. Other engine stuff is 5yrs 100,000 miles with $100 deductible.

If your dealer doesn't know this find another because he is clueless or trying to rip you, IMHO.
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Old 05-20-2006, 12:59 AM   #3 (permalink)
Mad4aMax
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Injector replacement on your duramax is not something you should expect to happen again(Providing your dealer did it right,i.e.keeps the contaminates from getting into the lines when replacing the injectors) Fuel injector overfueling falls under special policy 04039 which states the "As the owner of a 2001 or 2002 model year Chevrolet Silverado or GMC Sierra vehicle, your satisfaction with our product is very important to us.

This letter is intended to make you aware that some 2001-02 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with a 6.6L Duramax diesel engine, may experience vehicle service engine soon (SES) light illumination, low engine power, hard start, and/or fuel in crankcase, requiring injector replacement, as a result of high fuel return rates due to fuel injector body cracks or ball seat erosion.

This is not a recall. Do not take your vehicle to your dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

What We Have Done
General Motors is providing owners with additional protection for the fuel injectors. If this condition occurs on your 2001 or 2002 model year Chevrolet Silverado or GMC Sierra, equipped with a 6.6L Duramax diesel engine, within 7 years of the date your vehicle was originally placed in service or 200,000 miles, whichever occurs first, the condition will be repaired for you at no charge .

What You Should Do
Repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to call the service department at your dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is a convenient time for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glovebox literature for future reference."

direct from the customer special policy letter, basicly if the dealer is trying to make you pay for anything not even a deductable(unless they sold you additional maintanance) than you should stand your ground. be sure they replace your fuel filter(@ no charge) under the policy because it is part of the procedure.
This is good info I have performed this special policy more than once myself
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Old 05-20-2006, 01:07 AM   #4 (permalink)
Mad4aMax
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As for the fuel in the oil, well obviously that can't be the best but I have never personally seen any long term negative effects like from customers that have had your problem & still bring their truck back for maint. or other work over 100k after injectors!
The best thing you can do to help prevent future injector failures is change fuel filter every 15k & keep good fuel in your truck(from a high volume station)
I HOPE this gives you some HOPE!!!
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Old 05-20-2006, 02:30 PM   #5 (permalink)
scuba steve
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Yep! Thanks for the hope. dealer called and said 4 injectors are bad,and they will be replacing all 8.What changes have been made to replacment injectors?They have been improved right?
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Old 05-21-2006, 10:20 PM   #6 (permalink)
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They are supposed to be better! As to the specifics I'm not sure, they look identicle but that is because they are rebuilt, & the problem is on the inside.
Basicly GM Found some things they could improve on as far as the injectors
but the main thing I believe they found is the high pressure fuel lines above the valve cover are corroding & or rusting internally especially when the customers do not replace the fuel filter every 15k as they are supposed to.
That is part of the reason they came out with the fuel filter recall for all LB7 engines. To help customers realize the importance. Also as I said earlier the the dealer should be replacing your fuel filter as part of the special policy when they are doing your injectors. With both cases(recall 05546 & special policy 04039) GM is paying for it because it is that important! By the way If the dealer working on your truck isn't very familiar with diesels & hasn't done many injectors than they may not know to look inside of your high pressure fuel lines that feed the injectors, if their is any rust or corrosion inside or @ the seating surfaces than they should replace them, GM will pay for it,(they know rust particles blown through a injector @ 23,000psi will cause them to fracture & it may happen again. Not to worry you because as long as your dealer has Duramax experience than your Duramax will be tearing up asphalt again in no time.
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Old 05-22-2006, 01:01 AM   #7 (permalink)
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The explaination of what rust does to injectors was very interesting. maybe you can explain this. When I changed my original fuel filter I couldn't get the fuel to drain. After taking the fuel filter off and spilling fuel all over the place I examined the drain and it was plugged with rust particles. My question is, is rust always being introduced before or after fuel filter or both and is that one of the reasons for the recall ?
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Old 05-22-2006, 01:12 AM   #8 (permalink)
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Change your filter atleast every 10k miles
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Old 05-22-2006, 07:28 AM   #9 (permalink)
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Mad4amax: How does one know how much "diesel experience" a dealer has??? Is this a question we should ask of the service manager? For instance, do I walk up to the service manager and ask, "How many injector repairs has your diesel mechanic done?"

Or should I start with, "Do you have a diesel mechanic?" and then the question above? What ever happened to the ratings of dealers service dept? Did it ever get going?
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Old 05-22-2006, 03:27 PM   #10 (permalink)
scuba steve
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Great info! Ill be sur to mention those high-pressure lines when they call me.Truck is still and dealership. Tons of Thanks to ya!
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