Fuel Delivery issue (I think)

[wcmaness]

I have a 2002 Tahoe Z71 with 140k miles. When I began experiencing hard starts 6 months ago, I took it in and had the fuel pump replaced. Everything was running great. Then I tried to start it yesterday, and it cranked a second, fired up, and died. Now, it just cranks, starts and immediately dies. So my question is this - do I likely have a fuel filter problem, a fuel relay problem, or a fuel fuse problem, or possibly a new pump gone bad - or something else I've missed; and how do I check for any of these?

 

[tonymac617]

Any engine codes or Check engine light on at all? Check the fuel pressure if you can and see what you get with key on. Wouldnt hurt to change the fuel filter if you havent done it in while.

 

[wcmaness]

No lights. Fuel pump is 6 months old, and the fuel filter is new.

 

[wcmaness]

Ok. Fuel lines are free of air, plenty of pressure (fuel pump and filter are good), relay is good. HOWEVER - I discovered my IGN 01 fuse was blown. So - I replaced it, and it blew again as soon as I tried to crank. I suppose that is my problem BUT - what does this fuse do, and how/what do I check or fix to stop it from blowing? There are no warning/trouble lights coming on.