my s14 chev 1999 wont start battery is good

Have a friend turn the ignition key to the start position while you check for voltage at the small wire at the starter motor. With truck in Park apply power to that terminal at the starter it will show if the ignition circuit has a fault or the starter motor has failed. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online