93 gmc vandura 2500 wont crank when key is turned

your looking at everything in the initial start up of the car. Start with battery then cables look at starter solenoid and then starter itself. (dont throw parts all of these have tests which can determine if they are good) if all of those check good maybe an ignition switch problem or something along those lines. Start with the battery make sure it FULLY charged (12.6v) and check connections and check for corrosion on the cables. Then you may need to bust out a DVOM or other tools.