89 k-1500 chevy 305 got power to pump, pump is brand new but pump does nothing

Have you checked your fuses @ the relays under the hood in the black box yet? the fuel pump relay is what your looking for in that black box. turn the key on while someones holding their finger on top of the fuel pump relay, if it ticks when the keys turned off @ on,,,, it's good. go to another source, bleed fuel system af the bleeder valve on fuel rack to see if it's getting the fuel. ...if it's getting the fuel,,,go to is it getting fire? hope this helps!!!!

I am assuming you mean Fuel Pump, if it is you need to check grounds , there is a small ground strap when you remove the tank that is needed to ground the harness, make sure that is tight, its a 13mm bolt with a star washer make sure it goes back in the same area.

also check to see that you are getting a signal on the signal wire when you are requesting it when you crank the vehicle. i think its a purple or grey wire MAKE sure you do not use a test like on the sending unit wires, get a wiring diagram for your system.