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Old 07-01-2013, 07:29 PM   #1
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Fuel filter change

Getting ready for second service 10,000 mi on our new 3500 Duramax and the computer says fuel filter is still at 75 percent. Question is should it be changed now or wait for the 15,000 mi change. Thanks in advance.
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Old 07-01-2013, 07:43 PM   #2
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It cannot hurt to change it but based on mileage, the filter can likely wait till 15K. Most severe service applications the filters need to be changed every 12-15K. This is most Ford specs though. I have to believe the others are similar. If GM has the maint minder showing 15K, it is likely ok to go to 15K. Just do your truck a favor and use genuine GM parts.
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Old 07-06-2013, 03:48 PM   #3
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75% at 10k surprises me...you sure about both? At 10k it should be indicating 25 - 40 % depending on how crappy the diesel (CA or bio) is in your area. 75% at 10k does not sound right at all. I'd be very suspicious of the DIC, as in it got re-set accidently. I'd change it out and start from scratch again. The DICs are not all that accurate so you cannot go wrong changing the filter at 15-20%, IF you're sure it got reset properly the last time. Same with oil and transm. Don't forget to change out the spin-on trans filter every time you change your engine oil and filter, and don't throw away the magnet on top of the spin-on filter. That happens all the time (yup, I did it the first time I changed the Allison filter). and DON'T GO CHEAP on filters....any of them! In particular run fast and far from FRAM. If you don't use OE (GM - Allison) then go Wix.
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Old 07-07-2013, 03:51 PM   #4
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Thank you retired FPD I did not think so either as my last Duramax was about 40% at 10,000 mi so I am sure they must have hit the reset button at the 5k service. I had already planned on changing the transmisson filter and I am strictly a GM parts guy, thanks again.
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Old 08-11-2013, 05:11 AM   #5
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My 2011 3500 said 70% at 10K. I think the filter has been redesigned in the LML. I changed it out at the 10K and cut it open. It was very clean. I was surprised.
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Old 08-15-2013, 04:10 PM   #6
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Quote:
Originally Posted by Mobilcastle View Post
My 2011 3500 said 70% at 10K. I think the filter has been redesigned in the LML. I changed it out at the 10K and cut it open. It was very clean. I was surprised.
That would mean two things, either the filter passes more debris and does not catch it or the fuel that you are getting is fairly clean. Im sure the latter is correct.
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Old 10-05-2013, 12:26 AM   #7
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The computer detects the amount of fuel burned so it is not strictly a matter of miles driven as the mileage varies with the load and the terrain. Unless you have installed a tuner the filter will not need any early servicing and doing so is a waste of money. The exception is that the filter should be changed (per GM) every two years.

What is often overlooked is that these trucks have 9 zerk fittings to grease the front end steering and suspension parts and these should be greased every 3,000 miles.
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Old 10-06-2013, 06:07 PM   #8
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I have a 2004 Duramax diesel and get my oil changed and fuel filter at GM. I am a full timer and travel the US. Each different GM service adviser I have asked say that changing the fuel filter every 15000 is their recommendation. I change it every 3 oil changes cause I use Delvan pure synthetic oil that GM recommends, so I change oil every 5000 miles.
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Old 10-06-2013, 06:12 PM   #9
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I would have thought 15000 was a lot for a fuel filter since every fill up is a potential problem
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Old 10-07-2013, 03:07 AM   #10
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Quote:
Originally Posted by Brinsk View Post
I have a 2004 Duramax diesel and get my oil changed and fuel filter at GM. I am a full timer and travel the US. Each different GM service adviser I have asked say that changing the fuel filter every 15000 is their recommendation. I change it every 3 oil changes cause I use Delvan pure synthetic oil that GM recommends, so I change oil every 5000 miles.
I use Delvac oil which is what GM uses and it is regular oil. Changing every 5K is what I have always done-it is also easy to remember when to change.
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Old 10-09-2013, 04:23 PM   #11
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I change my oil at 7K with oil samples and my fuel filter when it gets so it won't pull. The longer you run it the finer particles it will filter and if you cut the fender and put a door in, you can change one in 10 min if you have fuel or Power Service to fill it with. I bought the CAT adapter also. They are bigger and last longer and are only $15 at CAT.
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Old 12-12-2013, 05:06 PM   #12
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30,000 miles on my 2011 and still at about 40% on filter life.

I do try to buy clean fuel.
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Old 12-13-2013, 07:27 PM   #13
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I change the oil every 5,000 miles and the fuel filter every 10,000 on my 2007 Duramax. Easy to remember to do every other oil change.
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Old 12-13-2013, 09:56 PM   #14
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Really depends on how you are using your truck. If your doing a lot of towing I would change it more often 10,000 verse city driving 20,000
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