Duramax Diesels Forum Truck of the Week
Old 06-12-2018, 08:54 PM
Allen8855 Allen8855 is offline
Join Date: Jun 2018
Posts: 2
Default GMC 2500hd duramax fuel issue

Help- after towing my 8000lbs camper 50 miles or so when I shut it off it want start till I prime fuel button under hood
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Old 06-12-2018, 10:51 PM
Budneeds2beers's Avatar
Budneeds2beers Budneeds2beers is offline
Aka Mike Honcho....
Join Date: Aug 2016
Location: Cali
Posts: 466


Maybe your loosing prime??? Start with the filter head probably a bad oring. Have you done anything service wise to it? Search feature is your friend here. Welcome
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Old 06-13-2018, 06:28 PM
citadel's Avatar
citadel citadel is offline
Join Date: Jan 2008
Location: TN
Posts: 43

Had the same issue with my truck after towing in Tuscon. I had air getting into my fuel system at the filter head. There are rebuild and replacement kits. I think I paid about $140 for a new filter head. Best way to check is to press the prime 'button' on the filter head after the truck is off. If it is soft after truck is off for sometime, you are losing pressure somewhere. Later, I ended up adding a lift pump and removing the test port/Schrader valve as well and haven't had a problem since. If you get a chance, add details about your rig like year make, model, mileage, any modifications. This will help people diagnose your issues.
2005 GMC Sierra 2500HD SLE CC LB
S&B Turbo Inlet Banks Intake
Banks Intercooler
Stock turbo with TCT BMW,
10 vane compressor, Billet vanes by Fingers
DHD 3" Y-Bridge
Nictane Adapter Airdog II DF-165
MBRP 4" Frontpipe back exhaust
MBRP Downpipe
Dmaxflow exhaust manifolds and up pipes
Trans rebuilt by me
Tuned by Idaho Rob
Kenwood DNX-5120
Buckstop bumpers front and back
Nicknamed "Audrey III"
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Old 06-13-2018, 08:11 PM
WVRigrat05's Avatar
WVRigrat05 WVRigrat05 is offline
Wound for sound
Join Date: Jan 2011
Location: French Creek, West Virginia
Posts: 3,032


I’d just slap a lift pump on it and let the good times roll. I know my filter heads shot but it starts and runs.
05' Black Chevy CC/SB LT- Blackout Performance built motor/trans/tuning- Gone

The Blessed Hellride- 08' White GMC Sierra SLT CC/SB,
100k miles. Piston eater.

Wife's ride- 2016 Pearl white Legacy limited 3.6R

Rig ride/new DD-02' Black Eddie Bauer explorer 4.6, -180k, still sporting original trans, outlasted two Duramaxs.
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Old 06-15-2018, 07:18 AM
Brent@LDS's Avatar
Brent@LDS Brent@LDS is offline
Join Date: Aug 2011
Location: Wisconsin
Posts: 539

This should kit your problem.

Looking for LB7 Injectors?
Check these prices out!....
......... Lincoln Diesel Specialties .........
Phone: 920-361-7700
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