The stop lights on tail, turn signals and hazard flashers isn't working. I already checked the f13 fuse, and it looks good. What am I missing???

 

You are missing truck details - like year, trim level, cab style, and drivetrain.......

You can't just "look" at a fuse, you have to use a meter or test light.

You also shouldn't post electrical issues in the V-8 Engines forum, that's what the Electrical forum is for.

 

You are 100% correct. Thank you for pointing out what I clearly missed.