The fuel pump for the model of my car only comes as a whole unit. You can't get separate parts anymore.

 

Okay I got my fuel pump replaced and fixed and I did it myself. I have a 2001 Blazer 4.3 Vortec. I took off the cover for the gas tank, dropped the tank, took off the the 3 gas lines on the old fuel pump, took off the 2 hoses that you pour gas in to the tank, and unhooked the power and ground wires. *It's common for fuel pumps to go bad on GM and it's also common that the ground wire will short out so make sure you check that too.* I replaced the old fuel pump with the new on and put it all back together and I'm able to roll around again. Hope this helps someone.

 

Having Similar issue, did you every figure out what it was?