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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 10-01-2019, 08:35 PM   #1 (permalink)
srodster
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Fuel Lines rusted from tank to engine

Any help with part numbers for the all the fuel lines from the tank to the engine? Mine have rusted where the crimp is from the flexible hose to the metal lines..... And another one has completely rusted shutting me down until I get new ones.

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File Type: jpg Fuel line a.jpg (130.9 KB, 30 views)
File Type: jpg Fuel line b.jpg (121.4 KB, 29 views)
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Old 10-01-2019, 10:59 PM   #2 (permalink)
heymccall
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Just put them on an '09 last year.
I got them here https://www.linestogo.com/product-fi...Silverado+3500 . They had a junction in the middle, making them easier to install than the stock ones. With that said, from the EBCM to the engine were still a PITA.

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Old 10-02-2019, 02:20 AM   #3 (permalink)
davester
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You may wish to also check your brake lines. The rear line goes bad where it runs along the frame rail over the fuel tank, which is difficult to see, but where the 4 lines run along the frame rail from the front driver's side wheel to the abs controller under the driver's seat is also a prime spot for them to go bad...


With the tank dropped, it's not too bad to replace the rear line if necessary.
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Old 10-02-2019, 01:47 PM   #4 (permalink)
Rvn4me
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Might be something in one of these
https://www.dieselplace.com/forum/76...es-rusted.html
https://www.dieselplace.com/forum/63...uel-lines.html
https://www.dieselplace.com/forum/63...placement.html

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Old 10-02-2019, 03:23 PM   #5 (permalink)
diesail
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I just did mine a couple of weeks ago.

https://www.dieselplace.com/forum/63...placement.html
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Old 10-02-2019, 06:47 PM   #6 (permalink)
srodster
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Looks like I have some good reading and will likely not go OEM, and stick to the ones that are spliced for the sake of ease. Wish I wouldn't have just filled the 30 gallon tank up, ugh........
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Old 10-02-2019, 08:29 PM   #7 (permalink)
heymccall
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Why? The tank doesn't have to come down.
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Old 10-02-2019, 09:16 PM   #8 (permalink)
srodster
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Awesome, I was thinking it had to come down.....
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Old 10-06-2019, 05:19 PM   #9 (permalink)
srodster
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Well, I am no contortionist yet. I'm still trying to figure out where the skinny rusted line in my original photo that is held in place leads to at the rear of the truck. Guessing on top of the tank somewhere, but too much shroud in the way, so it looks like I need to loosen that first. Maybe I don't need to drop the tank, but it sure looks tight up there....... I tried a small mirror but that didn't work either......
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Old 10-07-2019, 08:41 AM   #10 (permalink)
Rvn4me
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Quote:
Originally Posted by srodster View Post
I'm still trying to figure out where the skinny rusted line in my original photo that is held in place leads to at the rear of the truck
Maybe one of these diagrams have your picture in you photo.
GM Part :15772877 TANK, Fuel TANK,FUEL(34 GALLERY)
GM Part :89060639 SENDER, Fuel Tank Meter/Pump
SENDER,FUEL(FRONT TANK)(INCLUDES 3-6)(INCLUDES MODULE,LEVEL SENSOR & SEAL)
(001) GM Part :15044356 HOSE, FUEL RETURN
(002) GM Part :15044352 HOSE, FUEL FEED
(004) GM Part :15759054 HOSE, Evaporation Emission System(Fuel Tank End) HOSE,FUEL TANK VENT VALVE(895.0MM LENGTH)
https://www.wholesalegmpartsonline.c...roduct=2703860
(005) GM Part :15169342 HOSE, Fuel Line, HOSE,FUEL FEED & RETURN FRONT(INCLUDES 4,6,10-13,15-17,21)
https://www.wholesalegmpartsonline.c...roduct=2719479


Last edited by Rvn4me; 10-07-2019 at 08:58 AM.
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