filter may be clogged, pump may be bad or if it has been sitting for a long period of time the injectors may be stuck not allowing fuel to flow.
in the gas tank
Probably the fuel pump is bad.
pull the gas tank out and replace it
the fuse for the fuel pump is in the fuse box under the steering wheel
its in the tank witch has to be droped
Your fuel pump is in the fuel tank!
It does not have one, You have to remove fuel pump relay to shut fuel off.
There is no "reset" switch for the fuel pump on that 94 Blazer. If the fuse and relay for the pump are good, chances are the fuel pump has failed.
what color wire is the hot
The fuel pump for the 1990 full size blazer is located inside of the fuel tank. If this model does not have an access plate in the floor of the blazer then the tank will have to be removed to get to the pump.
The fuel pump on that 98 Blazer would be found inside the fuel tank. The fuel tank would have to be removed to gain access to the pump.
A plugged up fuel filter, a faulty fuel pressure regulator or a faulty fuel pump.