1998 GMC Jimmy HELP my Jimmy wont start

Engine Mechanical problem
1998 GMC Jimmy 6 cyl Four Wheel Drive Automatic

car turns over but won't start, gets fuel to fuel rail, has good spark at distributer, good oil pressure, but no fuel to injectors, just picked up noid light but hav'nt got the chance to use it. Was told it might be fuel injector sensor, no such thing on this car, was told sensor is actually a relay, again, no such thing! Help