Joker is right. Your dad should probably take your computer away too. Here your grades are down and you have already lost the use of your truck. Do you work extra hard to get it back? No, you are too tired and don't feel like it. At that rate it could be a while before the grades come up and you ride again. What is it going to take to get you motivated? It sounds like your dad is trying with the promise of truck parts and everything.
You might think I am a bit tough here but I was exactly your way when I was younger. I have learned the lesson that you are resisting now.
