1997 GMC Jimmy No fuel to injectors

Hi, did you check voltage and ground at fuel pump connector, before changing anything? For the pump motor, gray wire is voltage and black is ground. Check ecm B fuse, if no voltage. There should be a fuel pump test connector, under the hood, driver-side rear. A red wire with electrical connector, nothing plugged into it. If you use a jumper wire with inline fuse between battery and connector, the pump should run, don't need to use the key.