To do list for new (2003) truck

[Ozymandias]

Sure it can, it is just very unreliable and dies often.

 

[CoastyAV8R]

The lift pump is new so next time it dies, I'll swap it over to the in tank fuel pump. I'll just keep an eye on the fuel pressure.

 

[Tuesdak]

Buy a spare and keep it in the glove box. $$ expensive $$ to change to an in-tank pump. Besides you got other options like a belt drive lift pump from GDP and other electric pumps. The only reason my 2003 didn't get it bolted on was it didn't clear the 6.7 crank damper I had on it. With my prior bad luck with GM lift pumps I had the GDP kit in my hands.

 

[CoastyAV8R]

Good point, the block mounted lift pump isn't bad to change, the in tank one is a bit of work with an empty tank, with a full tank itd' be a nightmare

 

[Ozymandias]

Well, the intank often lasts half a million Miles or more. So, no problem there.
The intanks are proven reliable, where the other ones are not. So simple it is.

 

[Mhennessy]

Yes, watch that psi gauge.
My stock pump went 135K before checking out. I should have recognized that it was checking out because I always had 7-8 psi until it started to get cold and then show 4psi. It would recover a bit and then drop to 4 again. (yes I know, what good are gauges if you don't listen to them). This action went on for about 2 weeks of bouncing back and forth and then she left me on the side of a road headed to elk camp with a full fuel tank and trailer.
I got it towed home, siphoned the fuel out (used 8 of those clear 5 gallon water jugs because they are cheap) dropped the tank, completed the vent mod, cleaned the tank, threw in the Fleece Power Flow and she is happy again.

 

[CoastyAV8R]

Yes, watch that psi gauge.
My stock pump went 135K before checking out. I should have recognized that it was checking out because I always had 7-8 psi until it started to get cold and then show 4psi. It would recover a bit and then drop to 4 again. (yes I know, what good are gauges if you don't listen to them). This action went on for about 2 weeks of bouncing back and forth and then she left me on the side of a road headed to elk camp with a full fuel tank and trailer.
I got it towed home, siphoned the fuel out (used 8 of those clear 5 gallon water jugs because they are cheap) dropped the tank, completed the vent mod, cleaned the tank, threw in the Fleece Power Flow and she is happy again.

Was it a engine block mounted pump that went 135k or an intank pump?

 

[Mhennessy]

It was that cute little pump located on the back of the stock filter housing that failed. The embarrassing part about it is that I thought the truck had been retro'd with an in-tank pump because when I turned the key I could hear some buzzing back by the fuel tank. As it turns out that was my airlift pump. I have only had the truck for about 6 yrs and when I inflate the airbags I never put the two sounds together as its the same thing. SMH! Ill chalk it up to an educational learning experience. lol

 

[CoastyAV8R]

My compressor on the exhaust does the exact same thing to me but I thought the lift pump was the exhaust brake compressor. Turns out my exhaust brake compressor is deader than a doornail but my lift pump works great...