Question about 2003 GMC Sierra C/K3500
I have a GMC Sierra 3500, 6.6L Duramax Diesel engine, that had fuel injector replacement at 34,167 miles. Code J7801 replacement fuel injectors. Today the truck has 41,000 miles and #2 injector failed with fuel coming out wherever it can...exhaust pipe etc. Are these truck continuing to have the same problem even after repair? I have had numerous problems with this truck. It also had the transmission replaced at 2,000 miles and the steering assembly has also been replaced and then repaired. I think this is a GMC Lemon!!
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Posted on Jan 02, 2017
I see that you had the injectors replaced 20,000 miles ago. I would still check the oil to make sure it is not overfull. The new injectors could be bad. If the oil level is not overfull then get a paper towel and touch the dip stick tip on the paper towel while oil is on the dip stick. If it's only oil it will not spread. If it has diesel in the oil the oil with spread. If this test doesn't show the injectors to be bad then you have three other possibilities. The FICM (fuel injection control module), the fuel pressure regulator, or the injection pump. It's hard to pinpoint what the problem is without running more tests and the only way to run those tests is with the computer the dealership has. Just so you know your injectors are still under warranty until 100,000 miles. Most likely you will have to take it to the dealership to get you truck fixed. I hope this helps you some.
Posted on Jan 05, 2009
SOURCE: engine won't idle,
ok code 32 is the EGR (exhaust gas recirculation) this does not mean that the EGR valve is bad right off, check it and see if it is stuck in the open position, remove the vacuum line see if it moves, it should not. It is supposed to open at highway speed to recirculate exhaust gases and burn them, if the valve is stuck open the engine will not idle because it upsets the air mixture too much, if you remove the valve and see its open, then replace it.
Posted on Apr 07, 2009
SOURCE: thermostat installation 05 g3500
try these website to see if the have your truck listed its www.alldatadiy.com and another one is www.autozone.com i also would like to give you this information if you ever have any hard to find GM-parts its Schram auto & truck parts 1-800-292-1032 and they website is www.schramauto.com and i hope i have been some help to you MIchigan Man.
Posted on May 19, 2009
Hi: the 06 Duramax came with a LBZ, 18 mpg is normal, to improve it ... "chip" it, put in an "AirRaid air filter and a 5 inch exhaust. (cost about $1,000.00) Fuel mileage improved by over 30%.
Posted on May 22, 2009
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