Chevrolet Repair: 1989 chevy truck, inhibitor switch, chevy truck

Question
helo i have a 1989 chevy z71 it usualy starts fine but sometimes it wont crank but i have power from the battery.if i wait a few min iot will start right up.

Answer
HI RODNEY,WITHOUT LOOKING AT THIS IT COULD BE A NUMBER OF PROBLEMS.BUT YOU SAY IT HAS 12 VOLTS AT THE BATTERY WHEN TRYING TO START YES ??? THE FIRST THING I WOULD DO WHEN THIS HAPPENS IS HAVE SOMEONE TURN THE IGNITION WHILE YOU CK FOR POWER ON THE SMALL WIRE [PURPLE] ON THE START SOLENOID,NEXT TO THE MAIN BATTERY PLUS CABLE. WHEN THEY TURN THE KEY THE TEST LIGHT SHOULD LIGHT,IF THE LIGHT LIGHTS AND THERE IS 12 VOLTS ON THE MAIN STARTER CABLE THE STARTER IS BAD. IF NOT THE PROBLEM MAYBE @ IGNITION SWITCH OR IF AUTOMATIC THE NUETRAL SAFTY SWITCH.TRY TO PUT SHIFT LEVER IN NEUTRAL SEE IF IT STARTS LIKE THAT. IF MANUAL SHIFT CK THE CLUTCH INHIBITOR SWITCH AT CLUTCH PEDAL. REMOVE THE LEADS TO THE PEDAL SWITCH AND JUMP THEM, TURN THE KEY SEE IF THAT STARTS. GET BACK TO ME WITH MORE INFO IF ABOVE IF THIS DOES NOT HELP. TOM..