Duramax LB7 Losing Prime when parked? Heres how to fix. Silverado 3500HD

Its the simplest things that cause the biggest issues with these fuel systems

[woodstock]

Dude, after 10 plus years losing prime and no one had a solution, I sent this video to my mechanic and problem solved. Thanks so much

[TOPLS]

Really really appreciate guys like you that take the time to provide GRAET information. Thank you.

[shanebyrom]

My 2005 LLY is doing the same exact thing. My hoses look a little suspect but I didn’t think they were bad enough to cause this. I will be doing what you did today in hopes it will work. Thank you for the video. Top shelf!
Will report back😢

[TheSamplebridge]

Great video, have the exact same problem on my 06 LBZ. Figured it was a tiny air leak, but I hadn't no idea what I'm looking at with that mess of wiring and lines. This helped a ton for where I should be looking and for what. I figured it would be a bigger leak than that. I probably wouldn't of even took a 2nd look at that hose.

[jrmich]

Really good advice for the people want to fixed self truck problems thanks for the advice and help with the duramax trucks

[joem]

This is the video I’ve been looking for! Thank you for the explanation at the end. My truck has been unable to smog for a month now due to P0101! I’ve already cleaned my filter and EGR, but noticed a second code now related to fuel pressure (p1093). From what I’m reading, this could be caused by a leak similar to this. Wish my luck on hunting it down. Thanks again.

[stevierayplayer]

I am just embarking on the same problem thank you for pointing me in the right direction I will let you know how this goes❤

[abdd]

this just worked for me first time working on a duramax

[ottisleige]

Nice ass durmax. You keep that baby clean. Good job finding the leak

[northface]

Mine was the filter housing...Replaced all the seals...The bad o ring was for the filter heater connection...

[Mike-iybk]

Good video, I had a full set of fuel hoses sitting in the garage I ordered last year thinking they were going to need replacement from the looks of them. Had my first air pocket/no start today on my 2002. I'll be replacing them tomorrow.

[edwinanderson]

My problem was the steel line coming out of the aluminum filter head. It was loose and allowing air to suck in instead of fuel. I removed the line by twisting and pulling. Cleaned it and JB welded it back in. Problem solved.

[rickyborden]

Finally!!! I'm having the exact same issue on my 04. I had s feeling it was might be a hose, but i haven't ben able to find it. I'm foing to check that hose.

[godblessthisnation]

Great video !! Thanks for the information !! Very helpful

[MikeOrazzi]

Nice fix, I have an 06 Duramax 3500 that starts and stops right away after sitting. I'll give this a look.

[riccardocrosetti]

I have the same problem on my truck, tomorrow I prove to repair the leak and check if all works good, thanks a lot man, and nice truck! best regards from switzerland!

[alexandrogiraud]

The fuel sender unit have a filter, changing it will solve many no start problems.

[Re-Booter]

My 2004 LLY has this problem on very hot days, definitely going to look into this. Thanks for the video.

[twostrokev]

Commenting on the video for the algorithm is

[juanambriz]

Thank you for your time! Great explanation!