1994 GMC Jimmy no fuel coming thru to injectors

Spray some starting fluid down throttle body, if engine runs a few seconds, then a fuel problem.

Start by checking fuel pressure with a mechanical gauge. If pressure is good >45psi, then check fuses to injectors, if OK then check injectors with noid light.

The ECM must "see" a spark reference pulse or it will shut off fuel pump. So if you are getting fuel pressure with key on, but it goes away, then it could be an ignition problem. If no pressure with key on, then pump pressure line on fuel pump.