1998 S-10, 135k miles. 4.3 engine with LS package (consumer power > neraly everything).
>
> Runs about half a second on ether. Can't hear the fuel pump when
> key turned on. I did the fuel pump on my last Blazer, a 1989.
> That was about five hours work.
>
> The parts house says about $275 for the new fuel pump, comes with
> the gas tank sending unit, and can't just order the fuel pump.
> That's the one year warranty one. The Bosch one is about $50
> more, and lifetime warranty. Can have a Bosch for you in a couple > days.
>
> What's involved in replacing such a fuel pump? Pull the tank
> down, and lots of work?
Well if the pump is in the tank is there any other way? I had to pull the pump out of my former 88 Dodge Dakota because I was getting low fuel pressure at the throttle body inlet. Tank had to come down pulled the pump assembly out and here there was a neoprene hose coming from the pump to the hose manifold that had a small split in it allowing pumped gas right back into the tank. I replaced the pump none the less since I had that crap out. Not knowing your vehicle but assuming it's similar it's really not that much of a bitch to replace with the right tools and maybe a helper for the tank (hopefully there isn't much fuel in it)