If you're having starting problems, you should first check:
* Battery cables and connections: Ensure they're clean, tight, and corrosion-free.
* Battery voltage: A weak battery can prevent the starter from engaging.
* Ignition switch: A faulty ignition switch can prevent power from reaching the starter.
* Neutral safety switch: A malfunctioning neutral safety switch will stop the starter from operating.
* Starter motor itself: It could be failing internally.
A mechanic or a good auto parts store can help you diagnose the problem if you can't identify the cause. Simply looking for a "starter fuse" will be fruitless in this truck model.