Check there is power to the fuel pump via the connector at the tank. Check fuel pump relay and fuses related to this. Or if there is a fuel cutout switch on this somehwere. If not, then need a fuel pump.
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.
in the gas tank
The fuel pump is located inside the fuel tank. The fuel tank must be removed to gain access to the fuel pump.
Your fuel pump relay is located on the firewall passenger side.
No, you must drop the fuel tank.
GM vehicles do not have a fuel shut off/inertia switch
does that year have carb or tb?
Your fuel pump is in the fuel tank!
even though it sounds like it is pumping it may not be, try a new pump and new fuel filter
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.
The fuel pump may be running but not pumping any fuel. Have a fuel pressure test run.
IT CAN BE A FUSE. OR IT CAN BE THAT THE PUMP IS NOT PUMPING FUEL